3 results on '"Vladislav А. Dybov"'
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2. Роста и субструктура пленок ниобата лития
- Author
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Galina S. Ryzhkova, Vladislav А. Dybov, Dmitrii V. Serikov, and A. I. Dontsov
- Subjects
Physics ,Materials Chemistry ,Analytical chemistry ,Inorganic materials ,Physical and Theoretical Chemistry ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials - Abstract
Проведены исследования начальных стадий роста пленок ниобата лития на Si в процессе ВЧМР, исследовано влияние условий ВЧМР и последующих обработок (ТО, ИФО, БТО) на структуру, субструктуру и ориентацию получаемых покрытий. Установлено, что начальные стадии роста пленок ниобата лития в процессе ВЧМР на подогретой до 550 °С Si подложке характеризуются островковым зарождением кристаллитов и последующей их коалесценцией. Показана возможность управления текстурой пленок ниобата лития в процессе ВЧМР в условиях воздействия плазмы ВЧ-разряда, путем изменения состава рабочего газа. Показан эффект ИФО в кристаллизации аморфных пленок состава ниобата лития, заключающийся в формировании однофазной нанокристаллической пленки ниобата лития, в процессе обработки на воздухе. ИСТОЧНИК ФИНАНСИРОВАНИЯ Исследование выполнено при финансовой поддержке РФФИ, проект № 18-33-00836. ЛИТЕРАТУРА Lu Y, Dekker P., Dawes J.M. Journal of Crystal Growth, 2009, vol. 311, pp. 1441-1445. https://doi.org/10.1016/j.jcrysgro.2008.12.035 Poghosyan A. R., Guo R., Manukyan A. L., Grigoryana S. G. SPIE, 2007, vol. 6698, pp. 1-5. https://doi.org/10.1117/12.734353 Kadota M., Suzuki Y., Ito Y. Japanese Journal of Applied Physics, 2011, vol. 50, pp. 1-5. DOI: https://doi.org/10.1143/jjap.50.07hd10 Hao L., Li Y., Zhu J., Wu Z., Wang J., Liu X., Zhang W. Journal of Alloys and Compounds, 2014, vol. 599, pp. 108-113. https://doi.org/10.1016/j.jallcom.2014.02.078 Gupta V., Bhattacharya P., Yuzyuk Yu. I., Katiyar R. S. Mater. Res., 2004, vol. 19, N 8, pp. 2235-2239. https://doi.org/10.1557/jmr.2004.0322 Tan S., Gilbert T., Hung C.-Y., and Schlesinger T. E. Phys. Lett., 1996, vol. 68, p. 2651. https://doi.org/10.1063/1.116270 Shih W.-C., Sun X.-Y. Physica B: Condensed Matter, 2010, vol. 405, no. 6, pp. 1619–623. https://doi.org/10.1016/j.physb.2009.12.054 Barinov S. M., Belonogov E. K., Ievlev V. M., et al. DokladyPhysical Chemistry, 2007, vol. 412, no. 1, pp. 15-18. https://doi.org/10.1134/s0012501607010058 Hansen P. J., Terao Y., Wu Y., York R. A., Mishra U. K., Speck J. S. Vac. Sci. Technol., 2005, vol. 23, № 1, pp. 162-167. https://doi.org/10.1116/1.1850106 Sumets M., Ievlev V., Kostyuchenko A., Vakhtel V., Kannykin S., Kobzev A. Thin Solid Films, 2014, vol. 552, pp. 32–38. https://doi.org/10.1016/j.tsf.2013.12.005 Seok-Won Choi, et al. The Korean Journal of Ceramics, 2000, vol. 6, no. 20, pp. 138-142. Ievlev V. M., Soldatenko S. A., Kushhev S. B., Gorozhankin Ju. V. Inorganic Materials, 2008, vol. 44, no. 7, pp. 705-712. https://doi.org/10.1134/s0020168508070066 Ievlev V. M., Turaeva T. L., Latyshev A. N., et al. The Physics of Metals and Metallography, 2007, vol. 103, no. 1, pp. 58-63. https://doi.org/10.1134/s0031918x07010073
- Published
- 2019
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3. МОДИФИКАЦИЯ ПОВЕРХНОСТИ ТЕРМОЭЛЕКТРИЧЕСКИХ ВЕТВЕЙ НА ОСНОВЕ ТВЕРДОГО РАСТВОРА Bi2Te3-Bi2Se3 МЕТОДОМ ИМПУЛЬСНОЙ ФОТОННОЙ ОБРАБОТКИ
- Author
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Sergei B. Kuschev, Vladimir N. Sanin, Vladislav А. Dybov, Evgenii К. Belonogov, Aleksandr V. Kostyuchenko, Sergei А. Soldatenko, and Dmitrii V. Serikov
- Subjects
Materials science ,Analytical chemistry ,chemistry.chemical_element ,General Medicine ,Surface finish ,Nanoindentation ,chemistry.chemical_compound ,chemistry ,Phase (matter) ,Thermoelectric effect ,Surface roughness ,Bismuth telluride ,Sublimation (phase transition) ,Tellurium - Abstract
Degradation of the contact of the semiconductor legs of a thermoelement based on bismuth telluride with a commutation contact is a problem that hinders the commercial production of thermoelectric generators. The solution to this problem is to modify the near-surface layers of semiconductor legs. The aim of the research is to establish the regularities of phase and morphological transformations occurring in the near-surface layer and to evaluate the mechanical properties of the modified surface of semiconductor thermoelectric legs based on a Bi2Te3-Bi2Se3 (n-type) solid solution under pulsed photon treatment. Semiconductor legs based on the Bi2Te3-Bi2Se3 solid solution were obtained by isostatic pressing of powders of the appropriate composition in an argon atmosphere at a temperature of about 360-380 °C. Pulsed photon treatment (PPT) of semiconductor legs was carried out by the emission of three gas-discharge xenon lamps in vacuum (10-3 Pa) and in an Ar atmosphere. The processing time was 06 - 2.2 s, while the energy density of the light flux arriving at the surface of the samples varied from 70 to 275 J/cm2. The phase composition was studied by X-ray diffractometry, the elemental composition was investigated by the method of local X-ray spectral microanalysis, and scanning electron microscopy and atomic force microscopy were used to study the surface morphology. The hardness of the samples was investigated by the method of measuring nanoindentation. It has been established that PPT in vacuum leads to the development of the surface relief (an increase in the surface roughness and height difference) and a change in the phase composition due to the sublimation of selenium and tellurium. On the contrary, the PPT in the Ar atmosphere reduces the roughness and scarcely changes the phase composition of the legs. The research has determined the optimal modes of surface modification that allow to achieve the least roughness and high surface hardness without changing the phase composition of semiconductor thermoelectric legs by the PPT method. ACKNOWLEDGEMENTS The reported study was supported by the Ministry of Education and Science of the Russian Federation in the framework of the order of the Russian Government No.218 dated 9 April, 2010. (Contract No. 03.G25.31.0246).
- Published
- 2017
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