Труды сотрудников института физики

/ B. P. Sorokin [et al.] // Proc Annu IEEE Int Freq Control Symp. - 2000. - P. 410-415 . - ISBN 0161-6404
Аннотация: SOEC temperature dependences of different quality quartz crystals were studied. The simplified phenomenological theory was applied to calculate second order elastic constant temperature dependences. The bulk acoustic waves propagation under the bias of temperature field or of the uniaxial mechanical pressure was considered. It was found that crystal quality changes have caused certain variations of some third order elastic constant values and some temperature coefficients.

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Доп.точки доступа:
Sorokin, B. P.; Glushkov, D. A.; Turchin, P. P.; Michailyuta, S. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Doubovsky, A. B.; IEEE Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas)

/ M. A. Korshunov, V. F. Shabanov // Optoelectron. Instrum. Data Proces. - 2016. - Vol. 52, Is. 6. - P. 580-584, DOI 10.3103/S875669901606008X. - Cited References: 23 . - ISSN 8756-6990
Аннотация: The role of the local field, anharmonicity, and degree of disorder in the formation of the boson peak has been studied. The low-frequency Raman spectrum of a model polymethylmethacrylate crystal with disorder elements was calculated using the method of atom-atom potentials taking into account the effect of local fields on the spectrum. The calculations were carried out for a crystal containing rigid molecules of an isotactic polymethylmethacrylate oligomer and for a structure with flexible molecules. © 2016, Allerton Press, Inc.

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Держатели документа:
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation
Krasnoyarsk Scientific Center, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Коршунов, Михаил Анатольевич

/ A. M. Pugachev, I. V. Zaytseva, N. V. Surovtsev, A. S. Krylov // Ceram. Int. - 2020. - Vol. 46, Is. 14. - P. 22619-22623, DOI 10.1016/j.ceramint.2020.06.024. - Cited References: 26. - The reported study was funded by RFBR , according to the research project No. 18-02-00399 and 19-42-543-016 , Government of Novosibirsk region No. 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. The experiments were performed in the multiple-access center “High-Resolution Spectroscopy of Gases and Condensed Matter” in IA&E SB RAS (Novosibirsk, Russia) and Center for Common Use of the Krasnoyarsk Scientific Center, SB RAS (Krasnoyarsk, Russia) . - ISSN 0272-8842
Аннотация: The temperature dependencies of position, width, and integral amplitude the E(TO) line near 307 cm−1 in Raman spectra in barium titanate powders with different non-hydrostatic pressure and temperature treatment were studied. It was found that parameters of the E(TO) line near 307 cm−1 are different in the crystal, the untreated powder, the powder treated by the non-hydrostatic pressure, and the powder annealed after the pressure treatment. The line width (FWHM) increase with temperature according to Klemens model. It indicates that the origin of the line broadening is the anharmonicity of the E(TO) phonons. The pressure treatment changes the anharmonicity of the phonon potential. It was found that the temperature dependence of the integral intensity of the E(TO) line is similar to that of the second optical harmonic signal and reflects the presence of the local polar regions. Thus, the E(TO) line in the Raman spectrum allows one to characterize the average polarity of local regions and their anharmonicity depending on non-hydrostatic pressures and thermal treatment.

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Держатели документа:
Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I. V.; Surovtsev, N. V.; Krylov, A. S.; Крылов, Александр Сергеевич

/ А. М. Пугачев, И. В. Зайцева, Н. В. Суровцев, А. С. Крылов // Международная онлайн-конференция "Исследование сегнетоэлектрических материалов российскими учеными. Столетие открытия сегнетоэлектричества" (СЭ-100) : сб. тезисов / чл. прогр. ком. А. Н. Втюрин. - 2020. - Ст. С32. - С. 99 . - ISBN 978-5-9500624-3-8
   Перевод заглавия: Anharmonicity and local noncentrosymmetric regions in BaTiO3 pressed powder studied by the Raman line temperature dependence

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Втюрин, Александр Николаевич \чл. прогр. ком.\; Vtyurin, A. N.; Пугачев, А. М.; Зайцева, И. В.; Суровцев, Николай Владимирович; Крылов, Александр Сергеевич; Krylov, A. S.; Исследование сегнетоэлектрических материалов российскими учеными. Столетие открытия сегнетоэлектричества, международная онлайн-конференция(2020 ; 14-19 сент. ; Екатеринбург); Уральский Федеральный университет им. Первого Президента России Б.Н. Ельцина