Complex exchange anisotropy behavior in Co3O4-Ni0.6Zn0.4Fe2O4 composite with different Co3O4 content

被引：8

作者：

Ma, Qian ^{[1
]}

Ma, Yongqing ^{[1
]}

Zan, Fenlian ^{[1
]}

Xu, Yuanfeng ^{[1
]}

Zheng, Ganhong ^{[1
]}

Dai, Zhenxiang ^{[1
]}

Wu, Mingzai ^{[1
]}

Li, Guang ^{[1
]}

机构：

[1] Anhui Univ, Anhui Key Lab Informat Mat & Devices, Sch Phys & Mat Sci, Hefei 230601, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2014年 / 51卷

基金：

中国国家自然科学基金;

关键词：

Magnetic materials; Chemical synthesis; Magnetic properties; OXIDE HOLLOW STRUCTURES; RANDOM-FIELD MODEL; MAGNETIC-PROPERTIES; BIAS; COBALT; NANOPARTICLES; FE; TRANSITION;

D O I：

10.1016/j.materresbull.2013.12.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co3O4-Ni0.6Zn0.4Fe2O4 composites with different Co3O4 content have been synthesized by the hydrothermal combining with sal-gel methods. Exchange bias and significant coercivity enhancement have been observed around and below Neel temperature, T-N, of Co3O4 at certain Co3O4 content. Interestingly, the exchange anisotropy does not vanish at a much higher temperature of 200 K above T-N. The exchange anisotropy behaves complexly with Co3O4 content at different temperatures, which suggest that exchange anisotropy are affected by not only the coupling between ferrimagnetic and antiferromagnetic phases but also the interfacial magnetic states. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：381 / 388

页数：8

共 63 条

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