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    2-Thiobarbiturate complexes of Ca(II): synthesis, crystal structure and thermal properties / N. N. Golovnev [et al.] // 3 Int. Conf. on the Advancement of Mater. and Nanotechn. (ICAMN 2013) : Programme and abstracts book. - 2013. - P. 157
   Перевод заглавия: 2-тиобарбитуровые комплексы Ca(II): синтез, кристаллическая структура и термические свойства
Кл.слова (ненормированные):
calcium -- 2-thiobarbituric acid -- crystal structure -- thermal decomposition -- IR spectroscopy

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vereschagin, S. N.; Верещагин, С. Н.; Atuchin, V. V.; Атучин, Виктор Валерьевич; International Conference on the Advancement of Materials and Nanotechnology (3 ; 2013 ; Nov. ; 19-22 ; Penang, Malaysia)
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A capacitive dilatometer for measuring the magnetostriction, piezoelectric effect, and lInear thermal-expansion coefficient / A. L. Freidman [et al.] // Tech. Phys. Lett. - 2018. - Vol. 44, Is. 2. - P. 123-125, DOI 10.1134/S1063785018020074. - Cited References:11. - This study was supported by the Russian Foundation for Basic Research, the Government of Krasnoyarsk krai, the Krasnoyarsk Krai Foundation for Support of Scientific and R& D Activities (project no. 16-48-243040) and the Russian Foundation for Basic Research (project no. 16-3800245). . - ISSN 1063-7850. - ISSN 1090-6533

РУБ Physics, Applied

Аннотация: We describe a capacitive dilatometer for measuring the magnetostriction, piezoelectric effect, and linear thermal-expansion coefficient in the temperature range from 1.85 to 350 K in external magnetic fields of up to 90 kOe under a voltage of 1 kV, which operates on the basis of a Quantum Design PPMS commercial facility for studying the properties of solids.

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Публикация на русском языке Емкостный дилатометр для измерения магнитострикции, пьезоэлектрического эффекта и коэффициента линейного температурного расширения [Текст] / А. Л. Фрейдман [и др.] // Письма в Журн. техн. физ. - 2018. - Т. 44 Вып. 3. - С. 79–86

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Freydman, A. L.; Фрейдман, Александр Леонидович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семенов, Сергей Васильевич; Turchin, P. P.; Russian Foundation for Basic Research; Government of Krasnoyarsk krai; Krasnoyarsk Krai Foundation for Support of Scientific and R D Activities [16-48-243040]; Russian Foundation for Basic Research [16-3800245]
}
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A comparative study of transport properties of composites HTSC+MgTiO3 and HTSC + NiTiO3. The effect of paramagnetic NiTiO3 / M. I. Petrov, D. A. Balaev, K. A. Shaikhutdinov, K. S. Aleksandrov // Physica C-Superconductivity and its Applications. - 2000. - Vol. 341-348, Pt. 3. - P. 1863-1864, DOI 10.1016/S0921-4534(00)01217-X . - ISSN 0921-4534
Кл.слова (ненормированные):
Composite materials -- Copper oxides -- Josephson junction devices -- Magnesium compounds -- Nickel compounds -- Paramagnetism -- Superconductivity -- Thermal effects -- Transport properties -- Yttrium compounds -- Abrikosov vortices flow -- Superconductor insulator superconductor junction -- Thermally activated phase slippage -- High temperature superconductors
Аннотация: Bulk composites Y3/4Lu1/4Ba2Cu3O7+NiTiO3 and Y3/4Lu1/4Ba2Cu3O7+MgTiO3 with insulator volume content 7.5% and 15% modelling a network of Superconductor-Insulator-Superconductor (S-I-S) junctions have been prepared. The ?(T) dependences of composites HTSC+MgTiO3 are described well by the mechanism of Thermally Activated Phase Slippage (TAPS). The anomalous behavior of resistivity ?(T) of HTSC+NiTiO3 composites manifesting as a kink on ?(T) curves at some temperature Tm have been observed. In the temperature range Tm < T < TC the dissipation is Ohmic while below Tm the CVCs are strongly non-linear. This peculiarity is interpreted as arisen owing to Abrikosov vortices flow.

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Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; International conference on materials and mechanisms of superconductivity high temperature superconductors(6 ; 2000 ; Feb. ; 20-25 ; Houston, Texas, USA)
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A high thermal stability Cr3+-doped gallate far red phosphor for plant lighting: structure, luminescence enhancement and application prospect / C. Zhou, L. Peng, Z. H. Kong [et al.] // J. Mater. Chem. C. - 2022. - Vol. 10, Is. 15. - P. 5829-5839, DOI 10.1039/d2tc00614f. - Cited References: 39. - The authors would like to gratefully acknowledge funds from the National Natural Science Foundation of China (Grant no. 51974123), the Distinguished Youth Foundation of Hunan Province (Grant no. 2020JJ2018), Key R & D projects in Hunan Province (2020WK2016 & 2020SK2032), the Hunan High Level Talent Gathering Project (2019RS1077 & 2020RC5007), the Natural Sciences Foundation of Hunan Agricultural University (19QN11), the Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Resource Utilization Science Foundation (19KFXM12), the Changsha Science and technology plan (KH2005114), the Scientific Research Fund of Hunan Provincial Education Department (19C0903) and the Innovation Training Program for College Students of Hunan Province (No. S202010537012) . - ISSN 2050-7526. - ISSN 2050-7534

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
EMITTING PHOSPHOR
TUNING PHOTOLUMINESCENCE
LEDS
Аннотация: Cationic substitution is a common material modification strategy. Generally, it follows the principles of radius matching, valency equilibrium and stoichiometric substitution. However, radius-mismatched, nonstoichiometric-ratio ion substitution can achieve unexpected experimental results. Such unexpected results are very important for expanding the research of materials, but the modification mechanism is still unclear. In this work, the optical performance of ZnGa2O4:0.02Cr3+ (ZGO:0.02Cr3+) is effectively regulated by chemical unit cosubstitution (Ge4+–Li+/Na+ for Ga3+–Zn2+) and excess cation substitution synergetic strategies, and the thermal stability is retained at 97.7% at room temperature and 150 °C. Ge4+–Li+ and Ge4+–Na+ replace the lattice position of Ga3+–Zn2+ to enhance the photoluminescence (PL) intensity and quantum efficiency (QE) of ZGO:0.02Cr3+. The optimal doping contents of Ge4+–Li+ and Ge4+–Na+ are all 0.3 mol (PL intensity is 130.3% and 153.4% and QE = 77.4% and 85.1%). With further addition of Li+ ions, the emission intensity and QE continued to increase to 176.4% and 83.8%, respectively. The synergistic effect of the mechanism on optical properties is explained via Rietveld refinement, optical band gap energy and thermoluminescence. Finally, LED devices were fabricated by using the ZGO:0.02Cr3+,0.03Ge4+,0.11Li+ phosphor to investigate the effect on plant growth. The growth period was reduced and the fruit quality was improved in dwarf potted tomato, which shows the application prospect in plant growth of the ZGO:0.02Cr3+ phosphor.

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Держатели документа:
Hunan Agr Univ, Sch Chem & Mat Sci, Changsha 410128, Peoples R China.
Hunan Opt Agr Engn Technol Res Ctr, Changsha 410128, Peoples R China.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Sun Yat Sen Univ, Sch Chem, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China.

Доп.точки доступа:
Zhou, Cheng; Peng, L.u.; Kong, Zihui; Wu, Meihan; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhou, Zhi; Wang, Jing; Xia, Mao
}
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SHAPIRO, V. E.
ACCELERATION EFFECT DUE TO SCATTERING ON THERMAL EXCITATIONS / V. E. SHAPIRO // Fiz. Tverd. Tela. - 1985. - Vol. 27, Is. 6. - P. 1846-1851. - Cited References: 19 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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SHAPIRO, V. E.
ACCELERATION EFFECT DUE TO THERMAL FLUCTUATIONS / V. E. SHAPIRO // Phys. Lett. A. - 1984. - Vol. 102, Is. 4. - P. 167-170, DOI 10.1016/0375-9601(84)90933-2. - Cited References: 9 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
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    Achieving excellent thermostable red emission in singly Mn2+-doped near zero thermal expansion (NZTE) material Li2Zn3(P2O7)2 / Q. Liu, P. Dang, G. Zhang [et al.] // J. Mater. Chem. C. - 2023. - Vol. 11, Is. 31. - P. 10684-10693, DOI 10.1039/D3TC01683H. - Cited References: 62. - This work wasfinancially supported by the National Science and Technology Major Project (2022YFB3503800), the Projects for Science and Technology Development Plan of Jilin Province (20210402046GH), the National Natural Science Foundation of China (NSFC No. 51932009, 51929201, 52072349, 52172166), the Natural Science Foundation of Zhejiang Province (LR22E020004), the Project funded by China Postdoctoral Science Foundation (2022TQ0365), and the Ministry of Science and High Education of Russian Federation (Project No. FSRZ2023-0006), M.S. Molokeev and S.P. Polyutov acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2023-0006) . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Достижение превосходной термостабильной красной эмиссии в однократно легированном Mn2+ материале с почти нулевым тепловым расширением (NZTE) Li2Zn3(P2O7)2
Аннотация: The design of thermostable phosphor is still a pivotal challenge in pc-WLED applications. Herein, an efficient strategy is proposed to design excellent thermostable red emission in singly Mn2+-doped near zero thermal expansion (NZTE) material Li2Zn3(P2O7)2. Under the excitation of 412 nm wavelength, the emission could be tuned from 636 to 672 nm by increasing the Mn2+ doping level via synthetic effect among crystal field, the exchange coupling interaction in Mn-Mn dimers and energy transfer in different luminescence centers. The PL intensity of LZPO:Mn2+ maintains 97% at 150 °C and 94% at 200 °C of initial intensity at the room temperature. During the heat process, the LZPO presents near zero thermal expansion, which contributes to the nearly unaffected PL intensity. The traps assist energy transfer to luminescent center is also compensated for the emission loss. This work not only offers a perspective idea for elucidating the correlation between crystal structure and optical properties, but also opens a new way in line with that of designing excellent thermostable luminescent materials based on NZTE materials in self-reduction system.

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Держатели документа:
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
Faculty of Materials Science and Chemistry, China University of Geoscience, Wuhan 430074, P. R. China
International Research Center of Spectroscopy and Quantum Chemistry — IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Zhejiang Institute, China University of Geosciences, Hangzhou, 311305, P. R. China

Доп.точки доступа:
Liu, Qin; Dang, Peipei; Zhang, Guodong; Molokeev, M. S.; Молокеев, Максим Сергеевич; Polyutov, Sergey; Lian, Hongzhou; Cheng, Ziyong; Li, Guogang; Lin, Jun
}
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    Aliovalent substitution toward reinforced structural rigidity in Ce3+-doped garnet phosphors featuring improved performance / T. Hu [et al.] // J. Mater. Chem. C. - 2019. - Vol. 7, Is. 46. - P. 14594-14600, DOI 10.1039/c9tc05354a. - Cited References: 38. - This work was supported by the National Natural Science Foundation of China (No. 51722202 and 51972118), the Guangdong Provincial Science & Technology Project (2018A050506004) and the Fundamental Research Funds for the Central Universities (D2190980). . - ISSN 2050-7534
   Перевод заглавия: Алиовалентное замещение с целью усиления структурной жесткости в люминофорных гранатах, легированных Ce3 + и имеющих улучшенные характеристики
Кл.слова (ненормированные):
Color -- Deterioration -- Efficiency -- Gallium alloys -- Garnets -- III-V semiconductors -- Indium alloys -- Photoluminescence -- Reinforcement -- Rigidity -- Semiconductor alloys -- Thermal Engineering -- Thermodynamic stability
Аннотация: Highly efficient phosphors with thermal stability and color-tunable emission are required for the fabrication of phosphor-converted white light-emitting diodes (pc-WLEDs). Currently developed engineering strategies are generally successful in photoluminescence tuning but, unfortunately, suffer severe deterioration in emission intensity/efficiency and/or thermal stability. Herein, an efficient aliovalent substitution strategy toward reinforced structural rigidity is proposed and demonstrated experimentally. By incorporating Be2+ ion into the garnet-type Lu2SrAl4SiO12:Ce3+ phosphor, the phosphor shows enhanced internal/external quantum efficiency, from 79.2%/26.7% to 84.5%/32.9%, photoluminescence tuning from green (peaking at ∼512 nm) to yellow (peaking at ∼552 nm), and zero thermal quenching, even up to 200 °C. The Be2+ substitution at the Al2/Si2 site enables stable and rigid local surroundings around the Ce3+ activator, which is responsible for the unprecedented performance. In addition, high-quality warm WLED devices with a luminous efficiency of 158.1 lm W-1, correlated color temperature of 3858 K and high color rendering index of 81.7, are obtained by combining Lu2SrAl4SiO12:Ce3+,Be2+ as the yellow emitter, CaAlSiN3:Eu2+ as the red emitter and a blue-emitting InGaN chip. These findings highlight a new strategy for performance optimization of LED phosphors by selecting rigid covalent compounds with further reinforced structural rigidity via aliovalent substitution.

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Держатели документа:
State Key Laboratory of Luminescent Materials and Devices, Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Hu, T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Z.; Zhang, Q.
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    Chepkasov, I. V.
    Analysis of thermal effects on copper nanoparticles synthesized from the gas phase / I. V. Chepkasov, Z. I. Popov // IOP Conf. Ser.: Mater. Sci. Eng. - 2015. - Vol. 81. - Ст. 012033, DOI 10.1088/1757-899X/81/1/012033. - Cited References:14
Рубрики:
DEVICES
   FILMS
Аннотация: Molecular dynamics method using the tight-binding potential to carry out simulation of ultrafast heating of the synthesized particles from the gas phase to a temperature T= 600K and T= 900K, at which the particles were kept about 10 ns. As a result of the simulation revealed that the method of ultrafast heating the particles to high temperatures virtually eliminates the possibility of a clusters of defective education, but as a result of the heat treatment, the some of investigated particles can disconnect (burst) into smaller clusters.

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Доп.точки доступа:
Popov, Z. I.; Попов, Захар Иванович; International Scientific Conference on Radiation-Thermal Effects and Processes in Inorganic Materials (Nov 03-08, 2014 ; Tomsk, Russia); International scientific conference on radiation-thermal effects and processes in inorganic materials(2015)
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10.

Anharmonic thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystals. / I. P. Makarova [et al.] // Phys Status Solidi B. - 1984. - Vol. 121, Is. 2. - P. 481-486 . - ISSN 0370-1972
Кл.слова (ненормированные):
CRYSTALS -- X-RAYS - Diffraction -- ANHARMONIC THERMAL ATOMIC VIBRATIONS -- CUBIC PHASE -- PHASE TRANSITIONS -- CESIUM COMPOUNDS
Аннотация: Thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystal undergoing the structural phase transition (PT) at 138 K are investigated from the data of X-ray diffraction obtained at 278, 218, and 148 K. A significant anisotropy of thermal vibrations and their deviations from harmonic behavior are found for the Cl-atoms of the structure. These atoms displace from their equilibrium positions below PT due to the tilts of the octahedral groups.

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Держатели документа:
Acad of Sciences of the USSR, A. V., Shubnikov Inst of Crystallography,, Moscow, USSR, Acad of Sciences of the USSR, A. V. Shubnikov Inst of Crystallography, Moscow, USSR

Доп.точки доступа:
Makarova, I. P.; Misyul, S. V.; Мисюль, Сергей Валентинович; Muradyan, L. A.; Bovina, A. F.; Бовина, Ася Федоровна; Simonov, V. I.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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