Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Найдено в других БД:

Каталог книг и брошюр библиотеки ИФ СО РАН (1)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=thermoelectric<.>)

Общее количество найденных документов : 37
Показаны документы с 1 по 20

Regularity of thermal characteristics, thermoelectric properties of EuLnCuSe3 compounds (Ln = La–Lu) / N. N. Habibullayev, A. T. Burkov, S. V. Novikov [et al.] // Eur. Phys. J. Plus. - 2024. - Vol. 139, Is. 5. - Ст. 412, DOI 10.1140/epjp/s13360-024-05155-6. - Cited References: 53. - This study was funded by the Russian Science Foundation (project No. 23-23-00488 "Search for EMF generation conditions in gradient ceramics of samarium monosulfide (SmS)"). A.S.A is grateful for the state assignment funding from Kirensky Institute of Physics . - ISSN 2190-5444
Аннотация: The temperatures and enthalpies of the decomposition of EuLnCuSe3 compounds (Ln = La–Lu) are determined for the first time as functions of the Ln3+ ionic radius (rLn3+). The EuLnCuSe3 compounds with Ln = La and Ce decompose in the course of a solid-phase reaction to form EuSe, Ln2Se3, and Cu2−xSe, whereas those with Ln = Tb, Dy, Ho, Tm, and Lu melt incongruently to form EuSe and a melt, for example, Tdecay = 1175 K and ΔHdecay = 2.66 kJ/mol for EuLaCuSe3, while Tmelt = 1576 K and ΔHmelt = 2.69 kJ/mol for EuTbCuSe3. When plotted as functions of rLn3+, the temperatures of thermal effects of these compounds exhibit a periodic dependence and a tetrad effect. The temperature dependence of electrical resistivity and that of the Seebeck coefficient are measured from 300 to 600 K. It is shown that the studied compounds are p-type semiconductors with bandgaps ranging from 0.4 to ~ 1 eV.

Смотреть статью,
WOS
Держатели документа:
Department of Inorganic and Physical Chemistry, University of Tyumen, Tyumen, 625003, Russia
Thermoelement Physics Laboratory, Department of Physics of Dielectrics and Semiconductors, Ioffe Institute, St. Petersburg, 194021, Russia
Department of Physical and Applied Chemistry, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok Str. 50, Building 38, Krasnoyarsk, 660036, Russia
Siberian Federal University, Svobodnyj Av. 79, Krasnoyarsk, 660079, Russia
School of Natural Sciences, University of Tyumen, Tyumen, 625003, Russia
Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Ekaterinburg, 620990, Russia
Department of Construction Materials, Industrial University of Tyumen, Tyumen, 625000, Russia

Доп.точки доступа:
Habibullayev, N. N.; Burkov, A. T.; Novikov, S. V.; Yurev, I. O.; Aleksandrovskiy, A. S.; Александровский, Александр Сергеевич; Zakharova, A. D.; Shulaev, N. A.; Denisenko, Yu. G.; Andreev, O. V.
}
Найти похожие

Crystal structure and thermoelectric properties of mechanically activated LaCoO3 / V. A. Dudnikov, Yu. S. Orlov, L. A. Solovyov [et al.] // J. Taiwan Inst. Chem. Eng. - 2024. - Vol. 162. - Ст. 105560, DOI 10.1016/j.jtice.2024.105560. - Cited References: 88. - This study was supported by the Russian Science Foundation , project no. 24-22-00091 . - ISSN 1876-1070. - ISSN 1876-1089
Кл.слова (ненормированные):
Rare-earth cobalt oxides -- Crystal structure -- Thermoelectric properties -- Mechanical activation
Аннотация: Background: Crystal structure of rare-earth LaCoO3 cobalt oxide subjected to high energy mechanical activation has been studied. In the temperature range of 300–800 K, the electrical conductivity and Seebeck coefficient were measured. Thermal conductivity was measured at 300–480 K. Methods: Comparative analysis of thermoelectric properties of the samples prepared by standard solid-state reaction and using high-energy mechanical activation was carried out. Findings: It was found that the experimental X-ray diffraction patterns are best described within the model that allows the coexistence of two domains in samples with the same crystal symmetry, but different lattice a and c parameters. The percentage ratio of these domains in the samples depends significantly on the size of the initial particles in the solid-state synthesis reaction and the annealing temperature. Mechanical activation and increase of synthesis temperature result in change of Seebeck coefficient sign and significant decrease of electrical resistivity. The Seebeck coefficient of non-activated samples takes positive values over the entire temperature range and decreases monotonically with increasing temperature, in contrast to mechanically activated samples exhibiting ambipolar behavior.

Смотреть статью,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Solovyov, L. A.; Vereshchagin, S. N.; Ustyuzhanin, Yu. N.; Устюжанин, Юрий Николаевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Borus, A. A.; Борус, Андрей Андреевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
Найти похожие

Investigation of the magnetoelectric effect and thermoelectric power of the composite of iron-substituted bismuth pyrostannate Bi2(Sn0.7Fe0.3)2O7/Bi2Fe4O9 / L. V. Udod, S. S. Aplesnin, M. N. Sitnikov, O. B. Romanova // Phys. Solid State. - 2023. - Vol. 65, Is. 8. - P. 1305-1311, DOI 10.21883/PSS.2023.08.56576.83. - Cited References: 45 . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
composite -- magnetoelectric effect -- current-voltage characteristics -- hysteresis -- thermoelectric power
Аннотация: The composite compound Bi2(Sn0.7Fe0.3)2O7/Bi2Fe4O9 in the ratio 91/9% was synthesized by the solid-phase reaction method. The current-voltage characteristics were studied in the temperature range 800–400 K. The hysteresis of the current-voltage characteristics was found. The magnetoelectric interaction and thermoelectric power have been studied. The temperatures of predominance of the even and linear functions of the magnetoelectric effect are established. The sign change of the thermopower has been found.

Смотреть статью

Публикация на русском языке Исследование магнитоэлектрического эффекта и термоэдс в композитном железозамещенном пиростаннате висмута Bi2(Sn00.7Fe0.3)2O7/Bi2Fe4O9 [Текст] / Л. В. Удод, С. С. Аплеснин, М. Н. Ситников, О. Б. Романова. - 7 с. // Физ. твердого тела. - 2023. - Т. 65 Вып. 8. - С. 1361-1367

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Siberian State University of Science and Technology, Krasnoyarsk, Russia

Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Romanova, O. B.; Романова, Оксана Борисовна
}
Найти похожие

Stability and thermoelectric properties of mechano-activated solid solutions of Sr1-xLnxTiO3-δ (Ln = Nd, Gd, Dy) / Y. S. Orlov, S. N. Vereshchagin, L. A. Solovyov [et al.] // J. Taiwan Inst. Chem. Eng. - 2022. - Vol. 138. - Ст. 104449, DOI 10.1016/j.jtice.2022.104449. - Cited References: 39. - This study was supported by the Russian Foundation for Basic Research, project no. 20-52-04008 Bel_mol_a. Thermal analysis was performed within the scope of Budget Project No. 0287-2021-00-13 for the Institute of Chemistry and Chemical Technology SB RAS . - ISSN 1876-1070
Кл.слова (ненормированные):
Strontium titanate solid solutions -- Thermoelectric oxide materials -- Mechanochemical activation -- Electron microscopy
Аннотация: Background: The effect of mechanochemical activation on the microstructure, morphology, and thermoelectric parameters of the materials leading to an increase in the power factor (PF) is demonstrated by the example of the Sr1-xLnxTiO3-δ (Ln = Nd, Gd, Dy; x = 0.05, 0.075, 0.1) solid solutions. Methods: The strontium titanate solid solutions have been synthesized using a conventional ceramic technology from particles of different sizes obtained by mechanical activation of annealed ceramics. Findings: It is shown that different sizes of initial particles cause the morphological and microstructural differences and significantly affect the stability and thermoelectric properties of the synthesized samples. It has been established that a decrease in the initial particle size ensures the thermal stability of the samples and leads to an increase in their electrical conductivity and PF at the minor variation in the Seebeck coefficient. The PF of the Sr0.925Nd0.075TiO3 solid solution changes by a factor of 7. It has been found that the mechanically activated samples have the much lower porosity than the nonactivated ones, which noticeably reduces the effective area of their interaction with the environment (oxygen release and absorption); therefore, all the measurement data obtained on the mechanically activated samples upon their heating and cooling are reversible.

Смотреть статью,
Scopus
Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk, 660036, Russian Federation
SSPA "Scientific-Practical Materials Research Centre of NAS of Belarus", 19 P. Brovki st.Minsk 220072, Belarus

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Vereshchagin, S. N.; Solovyov, L. A.; Borus, A. A.; Борус, Андрей Андреевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Nikitin, A. V.; Bushinsky, M. V.; Lanovsky, R. A.; Rymski, G. S.; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич
}
Найти похожие

    Quaternary selenides EuLnCuSe3: Synthesis, structures, properties and in silico studies / M. V. Grigoriev, L. A. Solovyov, A. V. Ruseikina [et al.] // Int. J. Mol. Sci. - 2022. - Vol. 23, Is. 3. - Ст. 1503, DOI 10.3390/ijms23031503. - Cited References: 90 . - ISSN 1422-0067
   Перевод заглавия: Четвертичные селениды EuLnCuSe3: синтез, структура, свойства и компьютерное моделирование

РУБ Biochemistry & Molecular Biology + Chemistry, Multidisciplinary
Рубрики:
RARE-EARTH
   CRYSTAL-STRUCTURES
   MAGNETIC-PROPERTIES
   THERMOELECTRIC PERFORMANCE
Кл.слова (ненормированные):
inorganic materials -- ab initio calculations -- magnetic measurements -- lattice dynamics -- vibrational spectroscopy -- optical spectroscopy -- negative magnetization
Аннотация: In this work, we report on the synthesis, in-depth crystal structure studies as well as optical and magnetic properties of newly synthesized heterometallic quaternary selenides of the Eu+2Ln+3Cu+1Se3 composition. Crystal structures of the obtained compounds were refined by the derivative difference minimization (DDM) method from the powder X-ray diffraction data. The structures are found to belong to orthorhombic space groups Pnma (structure type Ba2MnS3 for EuLaCuSe3 and structure type Eu2CuS3 for EuLnCuSe3, where Ln = Sm, Gd, Tb, Dy, Ho and Y) and Cmcm (structure type KZrCuS3 for EuLnCuSe3, where Ln = Tm, Yb and Lu). Space groups Pnma and Cmcm were delimited based on the tolerance factor t’, and vibrational spectroscopy additionally confirmed the formation of three structural types. With a decrease in the ionic radius of Ln3+ in the reported structures, the distortion of the (LnCuSe3) layers decreases, and a gradual formation of the more symmetric structure occurs in the sequence Ba2MnS3 → Eu2CuS3 → KZrCuS3. According to magnetic studies, compounds EuLnCuSe3 (Ln = Tb, Dy, Ho and Tm) each exhibit ferrimagnetic properties with transition temperatures ranging from 4.7 to 6.3 K. A negative magnetization effect is observed for compound EuHoCuSe3 at temperatures below 4.8 K. The magnetic properties of the discussed selenides and isostructural sulfides were compared. The direct optical band gaps for EuLnCuSe3, subtracted from the corresponding diffuse reflectance spectra, were found to be 1.87–2.09 eV. Deviation between experimental and calculated band gaps is ascribed to lower d states of Eu2+ in the crystal field of EuLnCuSe3, while anomalous narrowing of the band gap of EuYbCuSe3 is explained by the low-lying charge-transfer state. Ab initio calculations of the crystal structures, elastic properties and phonon spectra of the reported compounds were performed.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Univ Tyumen, Lab Theory & Optimizat Chem & Technol Processes, Tyumen 625003, Russia.
SB RAS, Inst Chem & Chem Technol, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Univ Tyumen, Inst Chem, Tyumen 625003, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.
RAS, SB, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Ural Fed Univ, Inst Nat Sci & Math, Mira Str 19, Ekaterinburg 620002, Russia.
Univ Tyumen, Inst Phys & Technol, Tyumen 625003, Russia.
Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660079, Russia.
Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia.
Univ Tyumen, Engn Ctr Composite Mat Based Wolfram Cpds & Rare, Tyumen 625003, Russia.
Univ Stuttgart, Inst Inorgan Chem, D-70569 Stuttgart, Germany.
Kurgan State Univ, Adv Mat Ind & Biomed Lab, Sovetskaya Str 63-4, Kurgan 640020, Russia.
Ural Fed Univ, Innovat Ctr Chem & Pharmaceut Technol, Mira Str 19, Ekaterinburg 620002, Russia.

Доп.точки доступа:
Grigoriev, Maxim V.; Solovyov, Leonid A.; Ruseikina, Anna V.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Chernyshev, Vladimir A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Garmonov, Alexander A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Shestakov, N. P.; Шестаков, Николай Петрович; Matigorov, Alexey V.; Volkova, Svetlana S.; Ostapchuk, Evgeniy A.; Kertman, Alexander V.; Schleid, Thomas; Safin, Damir A.
}
Найти похожие

Fabrication and thermoelectric properties of SrTiO3–TiO2 composite ceramics / A. P. Zavjalov, G. A. Lyubas, M. R. Sharafutdinov [et al.] // Ceram. Int. - 2022. - Vol. 48, Is. 24. - P. 36500-36514, DOI 10.1016/j.ceramint.2022.08.210. - Cited References: 55. - This work was supported by the Russian Foundation for Basic Research (Project No. 18-29-11044). A.P.Z. appreciate the support from the Ministry of Science and Higher Education of the Russian Federation within the governmental order for the Institute of Solid State Chemistry and Mechanochemistry of SB RAS (project No. FWUS-2021-0004). D.Yu.K. is grateful to the Council on grants of the President of the Russian Federation (scholarship No. SP-3221.2022.1) for supporting the studies devoted to obtaining advanced ceramic materials. A.A.B. O.O.Sh. and E.K.P. grateful to the State Assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. 00657-2020-0006) for supporting the SEM images obtaining. The work was partially done at the shared research center SSTRC on the basis of the VEPP-4–VEPP-2000 complex at Budker Institute of Nuclear Physics of Siberian Branch of Russian Academy of Sciences . - ISSN 0272-8842. - ISSN 1873-3956
Кл.слова (ненормированные):
Composites -- BaTiO3 and titanates -- TiO2 -- Thermoelectric performance
Аннотация: The paper presents the results of preparing biphase SrTiO3–TiO2 ceramics as a promising system for n-type thermoelectrics using the features of a two-dimensional electron gas. Ceramics was obtained by reactive spark plasma sintering of SrCO3 and TiO2. The dynamics of phase transformations are shown; it is clarified that phase transformations are not the driving force of sintering. The mutual stabilization of the SrTiO3 and TiO2 phases is shown. Unique data on the assessment of the temperature gradient in the system have been obtained. A comparison of the thermoelectric characteristics of biphasic ceramics and its constituent phases allows concluding that the role of the two-dimensional electron gas is reduced to modulating the properties of bulk phases. Clear signs of size quantization were detected by the X-ray luminescence method, which is expressed in the blueshift of the luminescence spectrum by 22.3 ± 0.8 meV.

Смотреть статью,
Scopus,
WOS
Держатели документа:
SEC “Advanced Ceramic Materials”, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok, 690922, Russian Federation
Institute of Solid-State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, 18 Kutateladze Street, Novosibirsk630128, Russian Federation
Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 1 Nikol'skiy Prospekt, Kol'tsovo, 630559, Russian Federation
Laboratory of Physics of Magnetic Phenomena, L.V. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok Street, Krasnoyarsk, 660036, Russian Federation
Laboratory of Nuclear Technology, Department of Nuclear Technology, Institute of Science-Intensive Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok, 690922, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 5 Acad. Lavrentiev Avenue, Novosibirsk, 630090, Russian Federation
Institute for Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 5 Radio Street, Vladivostok, 690041, Russian Federation

Доп.точки доступа:
Zavjalov, A. P.; Lyubas, G. A.; Sharafutdinov, M. R.; Tarasov, I. A.; Тарасов, Иван Анатольевич; Belov, A. A.; Shichalin, O. O.; Papynov, E. K.; Kriventsov, V. V.; Kosyanov, D. Y.
}
Найти похожие

Enhancement of thermoelectric performance in Bi0.5Sb1.5Te3 particulate composites including ferroelectric BaTiO3 nanodots / Y. Cheng, J. Yang, Y. Luo [et al.] // ACS Appl. Mater. Interfaces. - 2022. - Vol. 14, Is. 32. - P. 37204-37212, DOI 10.1021/acsami.2c10424. - Cited References: 40. - This work was supported by the National Natural Science Foundation of China (51772019, 51572098, and 51632006) and the NSFC-Royal Society joint project (51811530307 and IEC\NSFC\170290) . - ISSN 1944-8244
Кл.слова (ненормированные):
thermoelectric -- ferroelectric -- BaTiO3 -- Bi0.5Sb1.5Te3 -- coupling
Аннотация: An increasing number of studies have reported producing composite structures by combining thermoelectric and functional materials. However, combining energy filtering and ferroelectric polarization to enhance the dimensionless figure of merit thermoelectric ZT remains elusive. Here we report a composite that contains nanostructured BaTiO3 embedded in a Bi0.5Sb1.5Te3 matrix. We show that ferroelectric BaTiO3 particles are evenly composited with Bi0.5Sb1.5Te3 grains reducing the concentration of free charge carriers with increasing BaTiO3 content. Additionally, as a result of the energy-filtering effect and ferroelectric polarization, the Seebeck coefficient was improved by ∼10% with a ∼10% improvement in power factors. The BaTiO3 phase can effectively scatters phonons reducing lattice thermal conductivity κl (0.5 W m–1 K–1) and increasing ZT to 1.31 at 363 K in Bi0.5Sb1.5Te3 composites with 2 vol % BaTiO3 content giving an improvement of ∼25% over pure Bi0.5Sb1.5Te3. Our work indicates that the introduction of ferroelectric nanoparticles is an effective method for optimizing the ZT of Bi0.5Sb1.5Te3-based thermoelectric materials.

Смотреть статью,
Scopus
Держатели документа:
State Key Laboratory of Materials Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Hubei Province, Wuhan, 430074, China
Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660036, Russian Federation
School of Engineering, London South Bank University, 103 Borough Road, London, SE1 0AA, United Kingdom
School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom

Доп.точки доступа:
Cheng, Y.; Yang, J.; Luo, Y.; Li, W.; Vtyurin, A. N.; Втюрин, Александр Николаевич; Jiang, Q.; Dunn, S.; Yan, H.
}
Найти похожие

The Sr2.4Dy0.6Co2O7-δ Ruddlesden‒Popper Phase: Structural, thermoelectric, and magnetic properties / V. A. Dudnikov, Y. S. Orlov, L. A. Solovyov [et al.] // Ceram. Int. - 2021. - Vol. 47, Is. 7, Part A. - P. 9068-9074, DOI 10.1016/j.ceramint.2020.12.030. - Cited References: 39. - The study was supported by the Russian Foundation for Basic Research , project no. 19-03-00017 and the budget project #АААА-А17-117021310222-4 for the Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences . - ISSN 0272-8842
Кл.слова (ненормированные):
Rare-earth substituted cobalt oxides -- Ruddlesden-Popper phase -- Thermoelectric oxide materials -- Magnetic properties
Аннотация: A new anion-deficient Sr2.4Dy0.6Co2O7‒δ (δ = 0.33–1.1) perovskite phase with a structure of the A3B2O7 Raddlesden‒Popper homologous series has been obtained by the solid-state synthesis in the reducing/oxidizing atmosphere and its structural characterization has been performed by the Rietveld refinement of the X-ray powder diffraction data. It has been stablished that the Sr2.4Dy0.6Co2O7‒δ compound (sp. gr. I4/mmm) has parameters of a = b = 3.8526(1) and c = 19.9431(7) Å in the reduced form (δ = 1.1) and a = b = 3.8086(1) and c = 19.9190(6) Å in the oxidized form (δ ≈ 0.33) and oxygen vacancies occupy mainly the sites linking CoO5 polyhedra inside two perovskite layers. It has been established using differential scanning calorimetry and thermogravimetry that, at T < 530 K, the synthesized phase is stable against the inert and oxidizing atmosphere; at higher temperatures, the Sr2.4Dy0.6Co2O7-δ compound can reversibly absorb/release oxygen. The magnetic properties of the Sr2.4Dy0.6Co2O6.09 compound have been investigated in the temperature range of 10–400 K and described in terms of the formation of dimers, in which the Co3+‒Co3+ and Co2+‒Co2+ ion pairs antiferromagnetically interact and are in the nonmagnetic ground state. The electrical conductivity and the Seebeck coefficient have been measured in air in the temperature range from 300 to 800 K. An observed sharp decrease in the Seebeck coefficient of the Sr2.4Dy0.6Co2O7-δ compound and the change in its sign near 700 K have been attributed to the transition of cobalt ions to the Co3+ state and the charge disproportionation of Co3+ ions to Co2+ and Co4+ ones.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Solovyov, L. A.; Vereshchagin, S. N.; Gavrilkin, S. Y.
}
Найти похожие

Effect of mechanical activation on the thermoelectric properties of Sr1-xSmxTiO3 ceramics / Y. S. Orlov, S. N. Vereshchagin, S. V. Novikov [et al.] // Ceram. Int. - 2021. - Vol. 47, Is. 20. - P. 28992-28999, DOI 10.1016/j.ceramint.2021.07.060. - Cited References: 31. - This study was supported by the Russian Science Foundation, project no. 19-72-00097 . - ISSN 0272-8842. - ISSN 1873-3956

РУБ Materials Science, Ceramics
Рубрики:
SRTIO3
   LA
   MICROSTRUCTURE
   CONDUCTIVITY
   PERFORMANCE
   FIGURE
   MERIT
Кл.слова (ненормированные):
Strontium titanate solid solutions -- Thermoelectric oxide materials -- Mechanochemical activation
Аннотация: The Sr1-xSmxTiO3 (х = 0.025, 0.05, 0.075, 0.1, 0.2) strontium titanate solid solutions were prepared from oxides and carbonates using a conventional ceramic technology based on the mechanochemical activation. The electrical conductivity and Seebeck coefficient of the synthesized compounds were measured in the temperature range from 300 to 800 K. We found that the properties of the samples significantly depend on the preliminary mechanochemical activation. The thermoelectric power factor attains maximum value in the hydrogen reduced samples with concentration of х = 0.05 and 0.075 obtained from nanoparticles: 5.5 μW/(cm · K2) for Sr0.95Sm0.05TiO3 (580 K) and 4.10 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K). An increase in the annealing temperature of mechanically activated samples leads to an even greater increase in electrical conductivity and power factor: 9.2 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K).

Смотреть статью,
WOS,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Ioffe Inst, St Petersburg 194021, Russia.

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Vereshchagin, S. N.; Novikov, S., V; Burkov, A. T.; Borus, A. A.; Борус, Андрей Андреевич; Sitnikov, M., V; Solovyov, L. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Russian Science FoundationRussian Science Foundation (RSF) [19-72-00097]
}
Найти похожие

10.

Experimental study of the thermal conductivity of single-walled carbon nanotube-based thin films / I. A. Tambasov, A. S. Voronin, N. P. Evsevskaya [et al.] // Phys. Solid State. - 2020. - Vol. 62, Is. 6. - P. 1090-1094, DOI 10.1134/S1063783420060311. - Cited References: 21. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, project Study of the Thermal Conductivity and Structural Features in Nanostructured Oxide Thin Films Promising for Thermoelectric Applications no. 18-42-243010 and the Scholarships of the President of the Russian Federation (SP-2235.2019.1). . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
THERMOELECTRIC PROPERTIES
TRANSPORT-PROPERTIES
Кл.слова (ненормированные):
single-walled carbon nanotubes -- vacuum filtration -- thin films -- thermal conductivity
Аннотация: The single-walled carbon nanotube-based thin films with a thickness from 11 ± 3 to 157 ± 18 nm have been formed using vacuum filtration. The thermal conductivity of the thin films as a function of thickness and temperature up to 450 K has been studied by the 3ω technique. It has been found that, in the region of 49 nm, the supplied heat from a gold strip started propagating with the high efficiency to the thin film plane. The thermal conductivity of the thin films with a thickness of 49 ± 8 nm was measured using the 3ω technique for bulk samples. It has been found that the thermal conductivity of the single-walled carbon nanotube-based thin films strongly depends on their thickness and temperature. The thermal conductivity sharply (by a factor of ~60) increases with an increase in thickness from 11 ± 3 to 65 ± 4 nm. In addition, it has been observed that the thermal conductivity of the thin film with a thickness of 157 ± 18 nm rapidly decreases from 211 ± 11 to 27.5 ± 1.4 W m–1 K–1 at 300 and 450 K, respectively.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Экспериментальное исследование коэффициента теплопроводности в тонких пленках на основе одностенных углеродных нанотрубок [Текст] / И. А. Тамбасов, А. С. Воронин, Н. П. Евсевская [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 6. - С. 960-964

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Nizhnii Novgorod State Univ, Res Inst Phys & Technol, Nizhnii Novgorod 603950, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Voronin, A. S.; Evsevskaya, N. P.; Kuznetsov, Yu M.; Luk'yanenko, A. V.; Лукьяненко, Анна Витальевна; Tambasova, E. V.; Gornakov, M. O.; Горнаков, М. О.; Dorokhin, M., V; Loginov, Yu Yu; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory; Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activity [18-42-243010]; Russian FederationRussian Federation [SP-2235.2019.1]
}
Найти похожие

11.

Thermoelectric properties of the SmCoO3 and NdCoO3 cobalt oxides / V. A. Dudnikov, A. S. Fedorov, Y. S. Orlov [et al.] // Ceram. Int. - 2020. - Vol. 46, Is. 11. - P. 17987-17991, DOI 10.1016/j.ceramint.2020.04.113. - Cited References: 41. - This study was supported by the Russian Science Foundation, project no. 16-13-00060. . - ISSN 0272-8842. - ISSN 1873-3956

РУБ Materials Science, Ceramics
Рубрики:
MAGNETIC-PROPERTIES
   SPIN
   CONDUCTIVITY
   TRANSITIONS
   LACOO3
   SITE
Кл.слова (ненормированные):
Perovskite -- Thermoelectric oxide materials
Аннотация: The thermoelectric properties of the NdCoO3 and SmCoO3 rare-earth cobalt oxides with a perovskite structure have been investigated in a wide temperature range. It is shown that, in the low-temperature region, the thermal conductivity of the compounds has a sharp maximum and the electrical conductivity of the samples increases with temperature, whereas the Seebeck coefficient behaves nonmonotonically with increasing temperature. The SmCoO3 oxide is characterized by the positive thermopower over the entire investigated range with a sharp growth in the low-temperature region, attaining the maximum value (S ≈ 1000 μV/K) near room temperature, and a further decrease. It has been established that, in the NdCoO3 oxide, the Seebeck coefficient changes its sign, which was rarely observed in the La-based compounds and is atypical of the undoped rare-earth cobalt oxides. The thermopower maximum obtained at a temperature of 450 K is 400 μV/K. The regions of the fastest growth of the thermoelectric power factor correspond to the anomalies caused by the spin transition of Со3+ ions and the dielectric–metal transition.

Смотреть статью,
Читать в сети ИФ,
Scopus,
WOS
Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Ioffe Inst, St Petersburg 194021, Russia.

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Fedorov, A. S.; Федоров, Александр Семенович; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Solovyov, L. A.; Vereshchagin, S. N.; Gavrilkin, S. Yu; Tsvetkov, A. Yu; Gorev, M. V.; Горев, Михаил Васильевич; Novikov, S., V; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Science FoundationRussian Science Foundation (RSF) [16-13-00060]
}
Найти похожие

12.

Investigation of microstrip ultra-wideband bandpass filters / B. A. Belyaev, S. A. Khodenkov, N. A. Shepeta [et al.] // J. Phys. Conf. Ser. - 2020. - Vol. 1488, Is. 1. - Ст. 012012DOI 10.1088/1742-6596/1488/1/012012. - Cited References: 16. - This study was supported by the Ministry of Education and Science of the Russian Federation, State assignment
Кл.слова (ненормированные):
Bandpass filters -- Bandwidth -- Control systems -- Microwave filters -- Resonators -- Thermoelectric equipment -- Ultra-wideband (UWB)
Аннотация: Ultra-wideband microwave filters with high frequency-selective properties have been developed by means of electrodynamic numerical analysis of 3D models. Microstrip structures, which are studied theoretically and experimentally, use one multimode resonator and a pair of single-mode resonators. There is fairly good agreement between the calculated data and the data taken on the experimental sample. The relative bandwidth of the manufactured microstrip filter is 60%.

Смотреть статью,
Scopus,
Читать в сети ИФ
Держатели документа:
Electrodynamics and Microwave Electronics Laboratory, Kirensky Institute of Physics, 38 bld., Krasnoyarsk 50, Akademgorodok, 660036, Russian Federation
Department of Radiophysics and Special Radioelectronic Devices, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation
Department of Electronics and Telecommunications, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Khodenkov, S. A.; Shepeta, N. A.; Chyurikova, T. I.; Malyshev, D. O.; International Scientific Conference on Electronic Devices and Control Systems(20-22 November 2019 ; Tomsk, Russian Federation)
}
Найти похожие

13.

Order–disorder transition in the Dy0.2Sr0.8CoO3-δ rare-earth cobalt oxide solid solutions: Structural and thermoelectric properties / Y. S. Orlov, V. A. Dudnikov, S. N. Vereshchagin [et al.] // J. Eur. Ceram. Soc. - 2020. - Vol. 40, Is. 15. - P. 5559-5565, DOI 10.1016/j.jeurceramsoc.2020.06.066. - Cited References: 29. - This study was supported by the Russian Science Foundation, project no. 19-72-00097 . - ISSN 0955-2219
Кл.слова (ненормированные):
Substituted rare-earth cobalt oxides -- Thermoelectric oxide materials -- Ordered and disordered states -- Phase transition
Аннотация: By the example of the Dy0.2Sr0.8CoO3-δ compound undergoing an order–disorder phase transition with increasing temperature, we demonstrate a significant dependence of the kinetic properties on the morphology of the internal spatially inhomogeneous structure, which forms in the sample depending on the rate of its transition from the high-temperature disordered cubic phase to the ground tetragonal ordered phase upon cooling. The results of transmission electron microscopy visualization of the spatially inhomogeneous state in the Dy0.2Sr0.8CoO3-δ ceramic samples are presented and compared with the X-ray diffraction data.

Смотреть статью,
Читать в сети ИФ,
Scopus,
WOS
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Lebedev Physical Institute, Moscow, 119991, Russian Federation

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Vereshchagin, S. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Gavrilkin, S. Y.; Tsvetkov, A. Y.
}
Найти похожие

14.

Study of plasmons and thermoelectric properties of nanoparticles connected by thin conductive bridges / A. S. Fedorov, P. O. Krasnov, M. A. Visotin, H. Ågren // The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. VI.30.03o. - P. 168. - This study was supported by the Russian Science Foundation, project no. 16-13-00060. . - ISBN 978-5-8044-1698-1

Материалы конференции,
Читать в сети ИФ

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Krasnov, P.O.; Visotin, M. A.; Высотин, Максим Александрович; Ågren, H.; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
Найти похожие

15.

Growth and thermoelectric properties of composite thin films based on higher iron and manganese silicides / I. A. Tarasov, I. A. Yakovlev, M. N. Volochaev [et al.] // The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. III.30.04p. - P. 90 . - ISBN 978-5-8044-1698-1

Материалы конференции,
Читать в сети ИФ

Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Nazarova, Z.I.; Nazarov, A.; Fedorov, A. S.; Федоров, Александр Семенович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
Найти похожие

16.

Thermoelectric and Plasmonic Properties of Metal Nanoparticles Linked by Conductive Molecular Bridges / A. S. Fedorov, P. O. Krasnov, M. A. Visotin [et al.] // Phys. Status Solidi B. - 2020. - Vol. 257, Is. 12. - Ст. 2000249, DOI 10.1002/pssb.202000249. - Cited References: 53. - This study was supported by the Russian Science Foundation, project no. 16-13-00060 (thermoelectric properties), and by the Ministry of Science and High Education of the Russian Federation, project no. FSRZ-2020-0008 (plasmonic properties) . - ISSN 0370-1972. - ISSN 1521-3951

РУБ Physics, Condensed Matter
Рубрики:
POLYMERS
ARRAYS
RANGE
Кл.слова (ненормированные):
charge transfer plasmons -- density functional theory -- nanoparticles -- thermoelectric properties
Аннотация: Thermoelectric and plasmonic properties of systems comprising small golden nanoparticles (NPs) linked by narrow conductive polymer bridges are studied using the original hybrid quantum-classical model. The bridges are considered here to be either conjugated polyacetylene, polypyrrole, or polythiophene chain molecules terminated by thiol groups. The parameters required for the model are obtained using density functional theory and density functional tight-binding simulations. Charge-transfer plasmons in the considered dumbbell structures are found to possess frequency in the infrared region for all considered molecular linkers. The appearance of plasmon vibrations and the existence of charge flow through the conductive molecule, with manifestation of quantum properties, are confirmed using frequency-dependent polarizability calculations implemented in the coupled perturbed Kohn-Sham method. To study the thermoelectric properties of the 1D periodical systems, a universal equation for the Seebeck coefficient is derived. The phonon part of the thermal conductivity for the periodical -NP-S-C8H8- system is calculated by the classical molecular dynamics. The thermoelectric figure of meritZTis calculated by considering the electrical quantum conductivity of the systems in the ballistic regime. It is shown that forAu309nanoparticles connected by polyacetylene, polypyrrole, or polythiophene chains atT = 300 K, the ZTvalue is {0.08;0.45;0.40}, respectively.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, Kirensky Inst Phys, KSC, SB, Krasnoyarsk 660036, Russia.
Tomsk State Univ, Tomsk 634050, Russia.

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Krasnov, Pavel O.; Visotin, M. A.; Высотин, Максим Александрович; Tomilin, F. N.; Томилин, Феликс Николаевич; Polyutov, Sergey P.; Russian Science FoundationRussian Science Foundation (RSF) [16-13-00060]; Ministry of Science and High Education of the Russian Federation; FSRZ-2020-0008 (plasmonic properties)
}
Найти похожие

17.

Structural, Optical, and Thermoelectric Properties of the ZnO:Al Films Synthesized by Atomic Layer Deposition / I. A. Tambasov [et al.] // Phys. Solid State. - 2019. - Vol. 61, Is. 10. - P. 1904-1909, DOI 10.1134/S1063783419100354. - Cited References: 33. - This study was supported by the Russian Science Foundation, project no. 17-72-10079. . - ISSN 1063-7834
Кл.слова (ненормированные):
atomic layer deposition -- thin films -- aluminum-doped zinc oxide -- structural and optical properties -- thermoelectric properties
Аннотация: Aluminum-doped zinc oxide thin films have been grown by atomic layer deposition at a temperature of 200°C. Using X-ray diffraction, it has been established that the ZnO:Al thin films exhibits the reflections from the (100), (002), (110), and (201) ZnO hexagonal phase planes. The (101) and (102) planes have also been detected by electron diffraction. The ZnO:Al thin films grow smooth with a root-mean-square roughness of Rq = 0.33 nm and characteristic nanocrystallite sizes of ~70 and ~15 nm without additional aluminum or aluminum oxide phases. The transmission at a wavelength of 550 nm with regard to the substrate has been found to be 96%. The refractive indices and absorption coefficients of the ZnO:Al thin films in the wavelength range of 250–900 nm have been determined. The maximum refractive indices and absorption coefficients have been found to be 2.09 at a wavelength of 335 nm and 0.39 at a wavelength of 295 nm, respectively. The optical band gap is 3.56 eV. The resistivity, Seebeck coefficient, and power factor of the ZnO:Al thin films are ∼1.02 × 10–3 Ω cm, –60 μV/K, and 340 μW m–1 K–2 at room temperature, respectively. The maximum power factor attains 620 μW m–1 K–2 at a temperature of 200°C.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch,Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Voronin, A. S.; Evsevskaya, N. P.; Евсевская, Н. П.; Masyugin, A. N.; Масюгин, Альберт Николаевич; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Smolyarova, T. E.; Nemtsev, I. V.; Немцев, Иван Васильевич; Lyashchenko, S. A.; Лященко, Сергей Александрович; Bondarenko, G. N.; Tambasova, E. V.
}
Найти похожие

18.

Thermoelectric properties of low-cost transparent single wall carbon nanotube thin films obtained by vacuum filtration / I. A. Tambasov [et al.] // Physica E. - 2019. - Vol. 114. - Ст. 113619, DOI 10.1016/j.physe.2019.113619. - Cited References: 53. - The study was carried out by a grant of Russian Science Foundation (project No. 17-72-10079). The electron microscopy examination was carried out at the Center for Collective Use of the Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences (Krasnoyarsk, Russia). V.A.E. and E.D.O. thank RFFI-18-32-00998_mol_a and RFFI-19-02-00859_a projects for support of development of two aqueous phase technique for nanotube separation. . - ISSN 1386-9477
Кл.слова (ненормированные):
Single-wall carbon nanotubes -- Aqueous two-phase extraction -- Semiconducting and metallic SWNTs -- Thin SWNT films -- Thermoelectric properties -- Thermoelectric figure of merit
Аннотация: The dispersions of semiconducting (sc-) and metallic (m-) SWCNTs with purity more than 98 and 86%, correspondingly, were obtained by using the aqueous two-phase extraction method. The unseparated (un-) SWCNTs contained ~3/4 of semiconducting and ~1/4 of metallic nanotubes. Thin films based on unseparated, semiconducting and metallic SWCNTs were prepared by vacuum filtration method. An Atomic Force Microscopy (AFM) and a Transmission Electronic Microscopy (TEM) were used to investigate the thin film microstructure. The thin SWCNT film transmittance was measured in the wavelength range of 300–1500 nm. Thermoelectric properties were carried out in the temperature range up to 200 °C. The largest Seebeck coefficient was observed for thin films based on semiconducting SWCNTs. The maximum value was 98 μV/K under the temperature of 170 °C. The lowest resistivity was 7.5·10−4·Ohm·cm at room temperature for thin un-SWCNT films. The power factor for m-SWCNT and un-SWCNT films was 47 and 213 μW m−1 K−2, correspondingly, at room temperature and 74 and 54 μW m−1 K−2 at 200 °C, respectively. For a thin sc-SWCNT film the maximum power factor was 2.8 μW m−1 K−2 at 160 °C. The un-SWCNT film thermal conductivity coefficient was 5.63 and 3.64 W m−1 K−1 and a thermoelectric figure of merit was 0.011 and 0.016 at temperatures of 23 and 50 °C, respectively.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Sciences and Technologies, Krasnoyarsky Rabochy Avenue 31, Krasnoyarsk, 660037, Russian Federation
Siberian Federal University, Svobodny Avenue 79, Krasnoyarsk, 660041, Russian Federation
Prokhorov General Physics Institute of RAS, Vavilov Street 38, Moscow, 119991, Russian Federation
Moscow Institute of Physics and Technology, Institutskiy per.9, Dolgoprudny, Moscow Region, 141701, Russian Federation
Lobachevsky State University of Nizhny Novgorod, Gagarin Avenue 23/3, Nizhny Novgorod, 603950, Russian Federation

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Voronin, A. S.; Evsevskaya, N. P.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Fadeev, Y. V.; Simunin, M. M.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Smolyarova, T. Е.; Abelian, S. R.; Абелян, Сергей Рубенович; Tambasova, E. V.; Gornakov, M. O.; Горнаков, М. О.; Eremina, V. A.; Kuznetsov, Y. M.; Dorokhin, M. V.; Obraztsova, E. D.
}
Найти похожие

19.

    Thermoelectric properties and stability of the Re0.2Sr0.8CoO3-δ (Re = Gd, Dy) complex cobalt oxides in the temperature range of 300‒800 K / V. A. Dudnikov [et al.] // Ceram. Int. - 2019. - Vol. 45, Is. 5. - P. 5553-5558, DOI 10.1016/j.ceramint.2018.12.013. - Cited References: 38. - This study was supported by the Russian Science Foundation , project no. 16-13-00060 , Russia . - ISSN 0272-8842
   Перевод заглавия: Термоэлектрические свойства и стабильность Re0.2Sr0.8CoO3-δ (Re = Gd, Dy) сложных оксидов кобальта в температурном интервале 300-800 К
Кл.слова (ненормированные):
Substituted rare earth cobalt oxides -- Thermoelectric oxide materials -- Ordered and disordered states
Аннотация: Temperature dependences of the electrical resistivity and Seebeck coefficient of the Re0.2Sr0.8CoO3‒δ (Re = Gd, Dy) complex cobalt oxides in the temperature range of 300 – 800 K have been investigated. The effects of ordering in the cation and anion sublattices on the thermoelectric properties has been examined and their comparative analysis has been made. It was found that, in the investigated temperature range, the thermoelectric power factor of the ordered compounds significantly exceeds the analogous parameter of the disordered samples. The temperature dependence of the electrical resistivity was shown to obey the activation law. As the temperature increases, the samples undergo a semiconductor-semiconductor electronic transition with a decrease in the activation energy. The thermoelectric properties of all the samples are shown to be stable in the investigated temperature range. The maximum thermoelectric power factor of the ordered Dy0.2Sr0.8CoO2.67 cobaltite at a temperature of 360 K has been obtained; it amounts to 0.23 µW/(cm·K2), which is a good parameter for this class of materials.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch”, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch”, Krasnoyarsk, 660036, Russian Federation
Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russian Federation

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Kazak, N. V.; Казак, Наталья Валерьевна; Fedorov, A. S.; Федоров, Александр Семенович; Solov'yov, L. A.; Vereshchagin, S. N.; Burkov, A. T.; Novikov, S. V.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
Найти похожие

20.

Effect of oxygen nonstoichiometry on electrical conductivity and thermopower of Gd0.2Sr0.8FeO3-δ ferrite samples / V. Dudnikov [et al.] // Materials. - 2019. - Vol. 12, Is. 1. - Ст. 74, DOI 10.3390/ma12010074. - Cited References: 24 . - ISSN 1996-1944
Кл.слова (ненормированные):
Rare-earth-substituted cobalt oxides -- Stability -- Thermoelectric properties
Аннотация: The behavior of the resistivity and thermopower of the Gd0.2Sr0.8FeO3−δ ferrite samples with a perovskite structure and the sample stability in an inert gas atmosphere in the temperature range of 300–800 K have been examined. It has been established that, in the investigated temperature range, the thermoelectric properties in the heating‒cooling mode are stabilized at δ ≥ 0.21. It is shown that the temperature dependencies of the resistivity obtained at different δ values obey the activation law up to the temperatures corresponding to the intense oxygen removal from a sample. The semiconductor‒semiconductor electronic transitions accompanied by a decrease in the activation energy have been observed with increasing temperature. It is demonstrated that the maximum thermoelectric power factor of 0.1 µW/(cm·K2) corresponds to a temperature of T = 800 K.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Ioffe Institute, St. Petersburg, 194021, Russian Federation

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Fedorov, A. S.; Федоров, Александр Семенович; Solovyov, L.; Vereshchagin, S.; Burkov, A. T.; Novikov, S.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
Найти похожие