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

被引：24

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] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

[2] Siberian Fed Univ, Krasnoyarsk 660041, Russia

[3] Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660049, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 636卷

关键词：

Thermite reactions; Reactive films; Ferromagnetic nanocomposite films; ZrO2; TEMPERATURE SYNTHESIS; MAGNETIC-PROPERTIES; PHASE-FORMATION; ZRO2; NANO;

D O I：

10.1016/j.jallcom.2015.02.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 alpha-Fe2O3 films at room temperature. The mixing at the Zr/Fe2O3 interface and synthesis of alpha-Fe and the amorphous ZrO2 phases start at a temperature above the initiation temperature T-in similar to 250 degrees C. Together with the formation of alpha-Fe, partial transformation from Fe2O3 to Fe3O4 occurs after annealing at 300 degrees 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 degrees C. After annealing at 500 degrees C the reaction products contain (110) textured alpha-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. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：223 / 228

页数：6

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