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Nonlinear optical processes in randomized domain structures of strontium tetraborate / Aleksandrovsky A.S., Shakhura I.E., Vyunyshev A.M., Zaitsev A.I., Zamkov A.V. // International Conference "Laser Optics 2008" June 23-28, 2008, St.Petersburg, Russia, p.55

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Shakhura, I. E.; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр, Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич
}
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Nonlinear diffraction and random QPM in strontium tetraborate / Aleksandrovsky A.S., Shakhura I.E., Vyunyshev A.M., Zaitsev A.I., Zamkov A.V. // 4th International Conference on Advanced Optoelectronics and Lasers (CAOL 2008), Sept. 29 2008-Oct. 4, 2008,Alushta, Crimea, Ukraine, p.398

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Shakhura, I. E.; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр, Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич
}
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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.

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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
}
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    Review of lead-free Bi-based dielectric ceramics for energy-storage applications / L. S. Li, P. Y. Fan, M. Q. Wang [et al.] // J. Phys. D. - 2021. - Vol. 54, Is. 29. - Ст. 293001, DOI 10.1088/1361-6463/abf860. - Cited References: 177. - The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51672092, U1732117 and 51902111), the China Postdoctoral Science Foundation (No. 2019M662602), the Natural Science Foundation of Guangxi (AA138162, GA245006, FA198015, and AA294014), the High-Level Innovation Team and Outstanding Scholar Program of Guangxi Institutes, and the Open Fund of the Guangxi Key Laboratory of Information Materials (No.191015-K). The authors thank the projects supported by the Guangdong HUST Industrial Technology Research Institute, the Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment (2020B1212060014) and the DongGuan Innovative Research Team Program (2020607101007). The authors wish to thank the Analytical and Testing Center of Huazhong University of Science and Technology for their help with related tests. In particular, the authors appreciate the valuable suggestions and comments made by the the anonymous reviewers and the editor, Professor Huiyun Liu . - ISSN 0022-3727. - ISSN 1361-6463
   Перевод заглавия: Обзор: Bi-содержащие бессвинцовые керамики для устройств хранения энергии

РУБ Physics, Applied
Рубрики:
TRANSMISSION ELECTRON-MICROSCOPY
STRONTIUM-TITANATE CERAMICS
Кл.слова (ненормированные):
dielectric materials -- energy storage -- lead-free -- Bi-based ceramics
Аннотация: Dielectric energy-storage ceramics have the advantages of high power density and fast charge and discharge rates, and are considered to be excellent candidate materials for pulsed power-storage capacitors. At present, the application of dielectric energy-storage ceramics is hindered by their low energy density and the fact that most of them contain elemental lead. Therefore, lead-free dielectric energy-storage ceramics with high energy storage density have become a research hot spot. In this paper, we first present the requirements that dielectric energy-storage capacitors impose on the properties of ceramic materials. We then review our previous research work combined with research progress into bismuth (Bi)-based lead-free energy-storage ceramics including Bi0.5Na0.5TiO3 (BNT), BiFeO3, and Bi0.2Sr0.7TiO3, in which the composition design ideas and related energy-storage characteristics of BNT-based lead-free energy-storage ceramics are emphasized. At the same time, we highlight the problems faced by Bi-based lead-free energy-storage ceramics and some strategies for addressing them. Finally, we examine the future prospects of research into Bi-based lead-free energy-storage ceramics.

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Держатели документа:
Huazhong Univ Sci & Technol, State Key Lab Mat Proc & & Mould Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China.
Guangdong HUST Ind Technol Res Inst, Dongguan 523808, Peoples R China.
Fukuoka Univ, Fac Sci, Fukuoka 8140180, Japan.
Brno Univ Technol, Cent European Inst Technol CEITEC, Brno, Czech Republic.
RAS, SB, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Tsinghua Univ, Sch Vehicle & Mobil, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China.
Guilin Univ Technol, Guangxi Key Lab Opt & Elect Mat & Devices, Guilin 541004, Peoples R China.

Доп.точки доступа:
Li, Lisong; Fan, Pengyuan; Wang, Mengqi; Takesue, Naohisa; Salamon, David; Vtyurin, A. N.; Втюрин, Александр Николаевич; Zhang, Yangjun; Tan, Hua; Nan, B.o.; Lu, Y.a.; Liu, Laijun; Zhang, Haibo
}
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Diffusion of strontium in the intergranular boundaries of La2–xSrxCuO4 / A. A. Bykov, D. M. Gokhfeld, K. Y. Terent’ev [et al.] // Russ. J. Phys. Chem. A. - 2021. - Vol. 95, Is. 6. - P. 1165-1168, DOI 10.1134/S0036024421060066. - Cited References: 11. - This work was supported by the Russian Science Foundation, project no. 17-72-10067 . - ISSN 0036-0244
Кл.слова (ненормированные):
composites -- superconductivity -- diffusion -- grain boundaries -- diffusion front -- LSCO (La1.56Sr0.44CuO4)
Аннотация: Energy dispersive X-ray spectroscopy and scanning electron microscopy are used to study La2CuO4–La1.56Sr0.44CuO4 composites with different annealing times. Maps of the strontium distribution for such systems are calculated and compared to experimental data obtained for the area of contact between two dissimilar granules. The coefficient of lattice diffusion of strontium is found. At the areas of contact between La2CuO4 and La1.56Sr0.44CuO4 granules, the strontium concentration corresponds to superconducting phase La2−xSrxCuO4 with x = 0.05–0.25. The technological parameters of synthesis affect the size and number of superconducting and normal regions. Prolonged annealing lowers the gradient of the strontium concentration, which halts the increase in the size of the superconducting regions. This saturation confirms the diffusion front model.

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Публикация на русском языке Диффузия стронция в межгранульной границе La2−xSrxCuO4 [Текст] / А. А. Быков, Д. М. Гохфельд, К. Ю. Терентьев [и др.] // Журн. физ. химии. - 2021. - Т. 95 № 6. - С. 903-907

Держатели документа:
Petersburg Institute of Nuclear Physics, National Research Center Kurchatov Institute, Gatchina, 188300, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bykov, A. A.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Petrov, M. I.; Петров, Михаил Иванович
}
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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).

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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]
}
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    Phenomenological rule from correlations of conduction/valence band energies and bandgap energies in semiconductor photocatalysts: calcium bismuthates versus strontium bismuthates / D. S. Shtarev, V. K. Ryabchuk, A. V. Rudakova [et al.] // ChemCatChem. - 2020. - Vol. 12, Is. 6. - P. 1551-1555, DOI 10.1002/cctc.201902236. - Cited References: 13. - The research was supported from a grant from the Russian Science Foundation (project No. 19-73-10013). We are very grateful to the staff of the Khabarovsk Innovation and Analytical Center of the Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, and of the Research Center on Nanophotonics and the Center for Physical Methods of Surface Investigation (to Dr. Alexandra Koroleva) of the Research Park at Saint-Petersburg State University for their valuable assistance in carrying out the research and in providing the needed equipment. VKR and AVR acknowledge financial support from a grant by the Saint-Petersburg State University (Pure ID 39054581). One of us (NS) thanks Prof. A. Albini and the staff of the PhotoGreen Laboratory of the University of Pavia for their continued hospitality . - ISSN 1867-3880. - ISSN 1867-3899
   Перевод заглавия: Феноменологическое правило из соотношений энергий проводимости / валентной зоны и энергий запрещенной зоны в полупроводниковых фотокатализаторах: висмутаты кальция против висмутатов стронция

РУБ Chemistry, Physical
Рубрики:
STRUCTURAL-PROPERTIES
Кл.слова (ненормированные):
calcium bismuthates -- strontium bismuthates -- bandgap energies -- semiconductor photocatalysts -- linear correlation of ECB/EVB with Ebg
Аннотация: A number of calcium bismuthates were synthesized (25 to 50 mol% in Ca) and characterized by XRD, SEM, EDX, XPS and DRS techniques; the latter provided an estimate of the bandgap energies (Ebg=2.41 to 3.29 eV) via Tauc plots for indirect transitions, whereas XPS established the potentials (vs NHE) of their respective valence bands (and thus the conduction bands). Linear correlations existed between EVB/ECB and Ebg that when compared with those of strontium bismuthates (reported earlier) showed that differences in energies at Ebg=0 eV are related to the difference in the absolute electronegativities of Ca and Sr, from which the following empirical phenomenological rule is postulated: replacing one alkaline earth metal in bismuthates by another causes the points of intersection of the linear correlations ECB(Ebg) and EVB(Ebg) to be displaced by an amount equal to twice the difference in absolute electronegativities of these metals.

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Держатели документа:
Russian Acad Sci, Yu A Kosygin Inst Tecton & Geophys, Far Eastern Branch, 65 Kim Yu Chen St, Khabarovsk 680063, Russia.
Far Eastern State Transport Univ, 47 Seryshev St, Khabarovsk 680021, Russia.
St Petersburg State Univ, Dept Photon, Ulyanovskaya 1, St Petersburg 198904, Russia.
St Petersburg State Univ, Lab Photoact Nanocomposite Mat, Ulyanovskaya 1, St Petersburg 198904, Russia.
Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Mat Sci, Khabarovsk Sci Ctr, Far East Branch, 153 Tihookeanskaya St, Khabarovsk 680000, Russia.
Univ Pavia, Dipartimento Chim, PhotoGreen Lab, Via Taramelli 12, I-27100 Pavia, Italy.

Доп.точки доступа:
Shtarev, D. S.; Ryabchuk, V. K.; Rudakova, A. V.; Shtareva, A. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kirichenko, E. A.; Serpone, N.; Russian Science FoundationRussian Science Foundation (RSF) [19-73-10013]; Saint-Petersburg State University [39054581]
}
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    Solid-state synthesis, characterization, UV-induced coloration and photocatalytic activity – The Sr6Bi2O11, Sr3Bi2O6 and Sr2Bi2O5 bismuthates / D. S. Shtarev [et al.] // Catal. Today. - 2020. - Vol. 340. - P. 70-85, DOI 10.1016/j.cattod.2018.09.035. - Cited References: 52. - The research was kindly funded by a grant from the Russian Science Foundation (project No. 17-73-00007). P.D. Murzin, A.V. Rudakova and V.K. Ryabchuk are grateful for financial support by the Mega-grant (No. 14.Z50.31.0016 ) from the Government of the Russian Federation within the Project “Establishment of the Laboratory of Photoactive Nanocomposite Materials” . The authors are very grateful to the staff of the Khabarovsk Innovation and Analytical Center of the Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, and the Resource Centers of the Research Park at the Saint-Petersburg State University: (i) Center for Diagnostics of Functional Materials for Medicine, Pharmacology and Nanoelectronics, (ii) Center for Physical Methods of Surface Investigation, (iii) Center for Optical and Laser Materials Research, and (iv) the Nanophotonics Center for their valuable assistance in carrying out the research and in providing the needed equipment. One of us (NS) is grateful to Prof. Angelo Albini for his continued hospitality in the PhotoGreen Laboratory at the University of Pavia, Italy. . - ISSN 0920-5861
   Перевод заглавия: Твердотельный синтез, характеризация, УФ-окрашивание и фотокаталитическая активность висмутатов Sr6Bi2O11, Sr3Bi2O6 и Sr2Bi2O5
Кл.слова (ненормированные):
Photocatalysts -- Strontium bismuthates -- Photocatalytic activity -- UV-induced coloration
Аннотация: This article reports on two novel strontium bismuthate photocatalysts (Sr6Bi2O11 and Sr3Bi2O6) prepared by a solid-state synthesis for which the number of strontium atoms exceeds the number of bismuth atoms in the cation sublattice; for comparison, the bismuthate Sr2Bi2O5 was also re-examined. All three bismuthates were characterized by a variety of spectroscopic techniques (XRD, XPS, EDX, DR, Raman, SEM, and EIS). Direct bandgap energies for the three bismuthates were assessed from diffuse reflectance spectra: 2.61 eV for Sr6Bi2O11; 3.40 eV for Sr3Bi2O6; 3.17 eV for Sr2Bi2O5, while the flatband potentials (versus NHE) of the corresponding valence bands were estimated from XPS spectra: +2.22 eV for Sr6Bi2O11; +1.71 eV for Sr3Bi2O6; +1.61 eV for Sr2Bi2O5. The two novel bismuthates displayed photocatalytic activity toward the photodegradation of acetaldehyde in the gas phase and phenol in aqueous media, with the Sr6Bi2O11 system exhibiting significantly greater photoactivity vis-à-vis the Sr3Bi2O6 bismuthate; by comparison, Sr2Bi2O5 was photocatalytically inactive in this case; their photoactivity was also assessed from the photodegradation of phenol in aqueous media (in all cases using UV-Vis irradiation from a Xe light source). Detailed photocatalytic mechanisms are proposed based on UV-induced coloration studies (carried out using a high-pressure Hg lamp; 365 nm) and on the photodegradation in the presence of radical scavengers to explain how composition and structure of the three bismuthates affect their photocatalytic activity. The role of point defects (oxygen vacancies) in their crystal lattice is described as they affect photocatalytic activity by acting as electron traps and potentially as electron/hole recombination centers.

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Держатели документа:
Yu. A. Kosygin Institute of Tectonics and Geophysics, Far Eastern branch of the Russian Academy of Sciences, 65 Kim Yu Chen Street, Khabarovsk, 680063, Russian Federation
Far Eastern State Transport University, 47 Seryshev Street, Khabarovsk, 680021, Russian Federation
St. Petersburg State University, Ulianovskaya 2, Petergof, Saint-Petersburg, 198904, Russian Federation
Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation
PhotoGreen Laboratory, Dipartimento di Chimica, Universita di Pavia, via Taramelli 12, Pavia, 27100, Italy

Доп.точки доступа:
Shtarev, D. S.; Shtareva, A. V.; Ryabchuk, V. K.; Rudakova, A. V.; Murzin, P. D.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Koroleva, A. V.; Blokh, A. I.; Serpone, N.
}
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Magnetic and resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystal / G. S. Patrin, M. M. Mataev, K. Z. Seitbekova [et al.] // Phys. Solid State. - 2020. - Vol. 62, Is. 8. - P. 1350-1354, DOI 10.1134/S1063783420080272. - Cited References: 20. - This study was supported by the Ministry of Education and Science of the Republic of Kazakhstan, project no. 05130165 and carried out in the framework of the cooperation agreement between the Siberian Federal University and the Kazakh National Women's Teacher Training University . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
CHROMIUM
TRANSITION
Кл.слова (ненормированные):
yttrium-strontium chromite manganite -- antiferromagnetic interaction -- inverse susceptibility -- magnetic resonance
Аннотация: The magnetostatic and magnetic resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystalline system have been experimentally investigated. The predominance of the intracrystalline ferromagnetic interaction and the antiferromagnetic character of the intercrystallite interaction have been established. The magnetic resonance spectrum in the magnetically ordered region consists of two lines. The high-field line corresponds to the interacting parts of polycrystal shells and the low-field peak is related to the disordered system of ferromagnetic particles.

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Публикация на русском языке Магнитные и резонансные свойства поликристалла Y0.5Sr0.5Cr0.5Mn0.5O3 [Текст] / Г. С. Патрин, М. М. Матаев, К. Ж. Сейтбекова [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 8. - С. 1204-1208

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Kazakh Natl Womens Teacher Training Univ, Alma Ata 050000, Kazakhstan.

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Mataev, M. M.; Seitbekova, K. Zh.; Shiyan, Ya. G.; Шиян, Ярослав Германович; Yarikov, S. A.; Яриков, Станислав Алексеевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Ministry of Education and Science of the Republic of KazakhstanGovernment of the Republic of KazakhstanMinistry of Education and Science of the Republic of Kazakhstan [05130165]
}
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10.

Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique / A. M. Pugachev, I. V. Zaytseva, V. K. Malinovsky [et al.] // Ferroelectrics. - 2020. - Vol. 560, Is. 1. - P. 54-60, DOI 10.1080/00150193.2020.1722883. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research, projects no. 18-02-00399 and 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. . - ISSN 0015-0193. - ISSN 1563-5112

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
RELAXOR
GROWTH
Кл.слова (ненормированные):
SBN-x crystals -- polar regions -- ferroelectric phase transition -- second harmonic generation -- Brillouin spectroscopy
Аннотация: In SrxBa1-xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinity of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.

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Держатели документа:
Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk, Russia.
Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk, Russia.
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia.

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I., V; Malinovsky, V. K.; Surovtsev, N., V; Gorev, M. V.; Горев, Михаил Васильевич; Ivleva, L. I.; Lykov, P. A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-02-00399, 19-42-543-016, AAAA-A17-117052410033-9]
}
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11.

    About photocatalytic properties of some heterostructures based on strontium bismuthate / D. S. Shtarev [et al.] // Key Eng. Mater. - 2019. - Vol. 806 KEM. - P. 161-166, DOI 10.4028/www.scientific.net/KEM.806.161. - Cited References: 9. - The research was carried out at the expense of a grant from the Russian Science Foundation (project No. 17-73-00007). . - ISSN 1013-9826
   Перевод заглавия: О фотокаталитических свойствах некоторых гетероструктур на основе висмутата стронция
Кл.слова (ненормированные):
Alkaline earth metal bismuthate -- Diffuse reflectance spectroscopy -- Heterostructure -- Photocatalytic activity -- Strontium bismuthate -- Visible light active photocatalysts
Аннотация: In the work, some heterostructures consisting of two different strontium bismuthates from the following series are investigated: Sr2Bi2O5, Sr3Bi2O6 and Sr6Bi2O11. It is shown that the creation of such heterostructures affects both optical and photocatalytic properties. The results obtained are promising for the further development and research of new heterostructures based on two different strontium bismuthates and for studying the characteristics of their photocatalytic activity. © 2019 Trans Tech Publications Ltd, Switzerland

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Держатели документа:
Institute of Tectonics and Geophysics Named After Yu.A. Kosygin of Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, Russian Federation
Far Eastern State Transport University, 47 Seryshev St., Khabarovsk, 680021, Russian Federation
Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shtarev, D. S.; Shtareva, A. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Syuy, A. V.; Nashchochin, E. O.; Asian School-Conference on Physics and Technology of Nanostructured Materials(4 ; 2018 ; Sept. ; 23-28 ; Vladivostok)
}
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12.

Nemtsev, A. V.
Ab initio study of the polarization, electronic, magnetic, and optical properties of perovskite SrMO3 (M = Fe, Mn) crystals and thin films containing magnetic ions / A. V. Nemtsev, V. S. Zhandun, V. I. Zinenko // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 4. - P. 497-505, DOI 10.1134/S1063776118030056. - Cited References: 30 . - ISSN 1063-7761
Кл.слова (ненормированные):
Antiferromagnetism -- Density functional theory -- Electronic properties -- Iron compounds -- Manganese compounds -- Optical properties -- Perovskite -- Perovskite solar cells -- Polarization -- Strontium compounds
Аннотация: The magnetic, electronic, and polarization properties of the SrFeO3 and SrMnO3 compounds with a perovskite structure are calculated using the density functional theory in the bulk and thin-film states. A ferroelectric instability is found to be absent in the bulk state, and the polar mode is softened in the thin-film state of SrMnO3 in the presence of tensile stresses in the substrate. As a result, a polar phase with a polarization of 23 μC/cm2 appears, which agrees with experimental data. The study of the magnetic and electronic properties demonstrates the existence of G-type antiferromagnetic ordering in SrMnO3 and the appearance of a dielectric gap of about 1.5 eV in its thin film. A ferromagnetic phase with metallic conduction in both the bulk and thin-film states is detected in SrFeO3.

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Публикация на русском языке Немцев, Андрей В. Исследования ab initio электронных, магнитных и оптических свойств кристаллов и тонких пленок перовскитов SrMeOs (Me = Fe, Mn), содержащих магнитные ионы [Текст] / А. В. Немцев, В. С. Жандун, В. И. Зиненко // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 4. - С. 605-614

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Немцев, Андрей В.
}
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13.

Samoshkina, Yu. E.
Electronic and magnetic states of Pr and Mn in the Pr1–xSrxMnO3 films studied by XANES and XMCD spectroscopy / Y. E. Samoshkina, A. Rogalev // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 5. - P. 660-665, DOI 10.1134/S1063776118040131. - Cited References: 35. - We thank V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. - This work was supported by the Russian Foundation for Basic Research (project no. 16-32-00209 mol_a) and a grant of the President of the Russian Federation (NSh-7559.2016.2). . - ISSN 1063-7761
Кл.слова (ненормированные):
Circular dichroism spectroscopy -- Dichroism -- Film growth -- Magnetic moments -- Manganese -- Praseodymium -- Strontium compounds -- X ray absorption
Аннотация: The spectral dependences of X-ray absorption near-edge spectroscopy (XANES) and X-ray magnetic circular dichroism (XMCD) and the field dependences of XMCD near the K edge of Mn and the L2,3 edges of Pr in the Pr0.8Sr0.2MnO3 and Pr0.6Sr0.4MnO3 films at T = 90 K are studied. The spectral dependences point to a mixed valence state of Mn and Pr in the films. It is found that, as compared to XANES, XMCD is more sensitive to the valence state of Pr4+. The field dependences of XMCD point to ferromagnetic behavior of Mn ions and the Van Vleck paramagnetism of Pr ions, which makes a significant contribution to the total magnetization of the films. It is shown that as the Sr concentration increases, the XMCD intensity at the K edge of Mn increases, which indicates a growth of the total magnetic moment of the film due to an increase in the 4p–3d hybridization.

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Публикация на русском языке Самошкина, Юлия Эрнестовна. Электронные и магнитные состояния Pr и Mn в пленках Pr1-xSrxMnO3 по данным спектроскопии XANES и XMCD [Текст] / Ю. Э. Самошкина, А. Л. Рогалев // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 5. - С. 794-799

Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,” Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
European Synchrotron Radiation Facility, Grenoble, CS, France

Доп.точки доступа:
Rogalev, A.; Самошкина, Юлия Эрнестовна
}
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14.

Generation of coherent radiation in the vacuum ultraviolet using randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Opt. Lett. - 2016. - Vol. 41, Is. 3. - P. 618-621, DOI 10.1364/OL.41.000618. - Cited References:15 . - ISSN 0146-9592. - ISSN 1539-4794

РУБ Optics
Рубрики:
Crystal
SrB4O7
nm
Аннотация: Tunable coherent radiation is generated in the vacuum ultraviolet down to 121 nm using random quasi-phase matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. Relevant properties of this radiation, the nonlinear process, and the nonlinear crystal are investigated.

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Держатели документа:
Max Born Inst Nonlinear Opt & Ultrafast Spect, 2A Max Born Str, D-12489 Berlin, Germany.
LV Kirenskii Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
}
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15.

Sobol, A. A.
Raman spectroscopy of SrB4O7 single crystals in the temperature range 300–1273 K / A. A. Sobol, V. E. Shukshin, A. I. Zaitsev // Opt. Spectrosc. - 2016. - Vol. 121, Is. 1. - P. 25-31, DOI 10.1134/S0030400X16070201. - Cited References: 20. - This work was supported by the Russian Foundation for Basic Research, project no. 13-02-00707a. . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
STRONTIUM TETRABORATE
   PHASE-TRANSITIONS
   SCATTERING
   SPECTRA
Аннотация: The polarized Raman spectra of SrB4O7 (SBO) single crystals are studied in detail in the temperature range of 300–1273 K. The TO, LO, and IO phonon lines of A1, A2, B1, and B2 symmetries of rhombic SBO at 300 K are identified. The behavior of the Raman spectra of SBO crystals is studied upon heating up to their melting. The relation of Raman spectra with the structure of boron–oxygen fragments, as well as the transformation of spectra in the process of melting of SBO crystals, is discussed. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Соболь А. А. Спектроскопия комбинационного рассеяния света в монокристаллах SrB4O7 в интервале температур 300–1273 K [Текст] / А. А. Соболь, В. Е. Шукшин, А. И. Зайцев // Оптика и спектроскопия : Наука, 2016. - Т. 121 № 1. - С. 28-35

Держатели документа:
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russian Federation
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shukshin, V. E.; Zaitsev, A. I.; Зайцев, Александр Иванович
}
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16.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // CLEO-SI : Optical Society of America, 2015. - P. 2267, DOI 10.1364/CLEO_SI.2015.STh3H.2. - Cited References:6 . - ISBN 9781557529688 (ISBN). - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
NM
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. © 2015 Optical Society of America.

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Доп.точки доступа:
Trabs, P.; Noack, F.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, V.; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
}
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17.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Conference on Lasers and Electro-Optics Europe - Technical Digest. - 2015. - Vol. 2015-August . - ISSN 9781-5575
Кл.слова (ненормированные):
Crystals -- Frequency conversion -- Harmonic analysis -- Nonlinear optics -- Optical harmonic generation -- Optical pulses -- Wavelength measurement
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. © 2015 OSA.

Scopus

Доп.точки доступа:
Trabs, P.; Noack, F.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, V.; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
}
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18.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Conference on Lasers and electro-optics (CLEO) : IEEE, 2015. - Cited References:6 . - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
NM
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. (C) 2015 Optical Society of America

WOS

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
}
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19.

Spectral fringes in non-phase-matched SHG and refinement of dispersion relations in the VUV / P. Trabs [et al.] // Opt. Express. - 2015. - Vol. 23, Is. 8. - P. 10091-10096, DOI 10.1364/OE.23.010091. - Cited References:11 . - ISSN 1094-4087

РУБ Optics
Рубрики:
2ND-HARMONIC GENERATION
   CRYSTAL
   STRONTIUM
   SrB4O7
Аннотация: We consider second harmonic generation (SHG) of ultrashort pulses in the case of strong phase- and group-velocity mismatch. Spectral fringes appear in the second harmonic related to two delayed replicas of the fundamental pulse in the time domain. The fringe separation can be used to evaluate the group-velocity and refractive index of nonlinear crystals at extreme wavelengths. Experimental results with femtosecond pulses in SrB4O7 (SBO) are used to refine the Sellmeier equation describing the nc refractive index down to 160 nm, essential for the use of this unique nonlinear crystal for random quasi-phase-matching in the VUV.

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Держатели документа:
Max Born Inst Nonlinear Opt & Ultrafast Spect, D-12489 Berlin, Germany.
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N. V.; Радионов, Никита Вячеславович; Petrov, V.
}
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20.

Morphology of the polar twin structure in Czochralski grown α-SrB4O7 crystals / A. I. Zaitsev [et al.] // J. Cryst. Growth. - 2015. - Vol. 416. - P. 17-20, DOI 10.1016/j.jcrysgro.2015.01.004. - Cited References:15. - This study is supported by Grant of the President of the Russian Federation for the support of leading scientific schools SS-924.2014.2. . - ISSN 0022. - ISSN 1873-5002. -

РУБ Crystallography + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
TETRABORATE
STRONTIUM
SRB4O7
Кл.слова (ненормированные):
Optical microscopy -- Czochralski method -- Borates -- Growth twins -- Nonlinear -- optic materials
Аннотация: The arrangement of a polar twin structure in Czochralski grown α-SrB4O7 crystals has been investigated. The transversal twin boundaries are stretched along [ 1 0 1 ] and [ 1 0 0 ] directions. The lateral twin boundaries are parallel to ( 0 1 0 ) plane. The twin structures have an extension up to centimeter size in all directions. Supposedly, they originate from polysynthetic polar microtwins revealed to form in ( 1 0 1 ¯ ) and ( 1 ¯ 0 1 ¯ ) growth pyramids. The dimensions, planarity and thickness stability of each individual twin are favorable for organizing quasi-phase matching conditions for nonlinear optical doubling of high-aperture beams.

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Держатели документа:
SB RAS, LV Kirensky Inst Phys, Akademgorodok 660036, Krasnoyarsk, Russia.
Siberian Fed Univ, Svobodny Prospect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N. V.; Радионов, Никита Вячеславович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Grant of the President of the Russian Federation for the support of leading scientific schools [SS-924.2014.2]
}
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