In Situ Electron Diffraction Investigation of Solid State Synthesis of Co-In2O3 Ferromagnetic Nanocomposite Thin Films | Научно-инновационный портал СФУ

In Situ Electron Diffraction Investigation of Solid State Synthesis of Co-In2O3 Ferromagnetic Nanocomposite Thin Films

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1007/s11837-019-03919-5

Аннотация: In situ electron diffraction was used to study structural transformations during the formation of Co-In2O3 ferromagnetic nanocomposite thin films in a thermite reaction of In/Co3O4 bilayer thin films. Heating was performed from room temperature to 600 degrees C at a rate of 4 degrees C/min, while simultaneously electron diffraction patterns were recorded at a speed of 4 frames/min This made it possible to determine the initiation, 185 degrees C, and finishing, 550 degrees C, temperatures of the solid-state synthesis, as well as the change in the phase composition during the thermite reaction. The synthesized Co-In2O3 film nanocomposite contained ferromagnetic cobalt nanoclusters surrounded by an In2O3 layer, with an average size of 20 nm, and had a magnetization of 400 emu/km(3) and a coercivity of 50 Oe at room temperature. The estimate of the effective inter diffusion coefficient of the reaction suggests that the main mechanism for the formation of the Co-In2O3 nanocomposite is diffusion along the grain boundaries and dislocations.

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Издание

Журнал: JOM

Выпуск журнала: Vol. 72, Is. 6

Номера страниц: 2139-2145

ISSN журнала: 10474838

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Bykova Liudmila E. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia)
  • Zharkov Sergey M. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia; Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia)
  • Myagkov Victor G. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia)
  • Zhigalov Victor S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia)
  • Patrin Gennady S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia; Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia)

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