Solid state synthesis and characterization of Fe-ZrO2 ferromagnetic nanocomposite thin films

被引：0
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作者：
Myagkov, V.G. [1 ]
Bykova, L.E. [1 ]
Bayukov, O.A. [1 ]
Zhigalov, V.S. [1 ]
Tambasov, I.A. [1 ]
Zharkov, S.M. [1 ,2 ]
Matsynin, A.A. [1 ,2 ]
Bondarenko, G.N. [3 ]
机构：
[1] Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk,660036, Russia
[2] Siberian Federal University, Krasnoyarsk,660041, Russia
[3] Institute of Chemistry and Chemical Technology, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk,660049, Russia
来源：
Journal of Alloys and Compounds | 2015年 / 636卷
关键词：
Fe-ZrO2 ferromagnetic nanocomposite thin films are successfully synthesized using a thermite reaction between the Zr and Fe2O3 layers. The initial Zr/Fe2O3 bilayers were obtained by the deposition of Zr layers on α-Fe2O3 films at room temperature. The mixing at the Zr/Fe2O3 interface and synthesis of α-Fe and the amorphous ZrO2 phases start at a temperature above the initiation temperature Tin ∼ 250 °C. Together with the formation of α-Fe; partial transformation from Fe2O3 to Fe3O4 occurs after annealing at 300 °C. The secondary reaction between Fe3O4 and Zr starts soon after the Fe2O3 is converted to the Fe3O4 phase. The crystallization of amorphous ZrO2 and the formation of the ZrO2 cubic/tetragonal phase occurs above 400 °C. After annealing at 500 °C the reaction products contain (1 1 0) textured α-Fe nanocrystals with a diameter of about 34 nm embedded in an insulating c-ZrO2 (or t-ZrO2) matrix. The synthesized Fe-ZrO2 nanocomposite films possess soft magnetic behavior; high magnetization and good chemical stability. © 2015 Elsevier B.V;
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页码：223 / 228
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