Magnetic and structure properties of CoPt-In$_2$O$_3$ nanocomposite films

Liudmila E. Bykova ; Victor G. Myagkov ; Victor S. Zhigalov ; Alexei A. Matsynin ; Dmitry A. Velikanov ; Galina N. Bondarenko ; Gennady S. Patrin

Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 13 (2020) no. 4, pp. 431-438.

Résumé

The structural and magnetic properties of CoPt-In$_2$O$_3$ nanocomposite films formed by vacuum annealing of the In/(Co$_3$O$_4$ + Pt)/MgO film system in the temperature range of 100–800 $^\circ$C have been investigated. The synthesized nanocomposite films contain ferromagnetic CoPt grains with an average size of 5 nm enclosed in an In$_2$O$_3$ matrix, and have a magnetization of 600 emu/cm$^3$, and a coercivity of 150 Oe at room temperature. The initiation 200 $^\circ$C and finishing 800 $^\circ$C temperatures of synthesis were determined, as well as the change in the phase composition of the In/(Co$_3$O$_4$ + Pt)/MgO film during vacuum annealing.

Détail

Keywords: thin films, CoPt alloy, In$_2$O$_3$ oxide.
Mots-clés : ferromagnetic nanocomposites

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