Magnetoresistance and exchange bias effect of (Co2MnSi)1-x-(NiO)x nanocomposites

被引：0

作者：

Cai, Xinle ^{[1
]}

Li, Shandong ^{[1
,2
]}

Liu, Meimei ^{[2
]}

Wu, Jianpeng ^{[1
]}

Hu, Yi ^{[1
]}

Qiu, Jie ^{[1
]}

Lin, Jianhua ^{[1
]}

机构：

[1] Fujian Normal Univ, Dept Phys, Fuzhou 350007, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou, Peoples R China

来源：

NEW MATERIALS, APPLICATIONS AND PROCESSES, PTS 1-3 | 2012年 / 399-401卷

关键词：

Half-metallic ferromagnets; magnetoresistance; exchange bias; interface coupling; TEMPERATURE; CO2MNSI;

D O I：

10.4028/www.scientific.net/AMR.399-401.620

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The (Co2MnSi)(1-x)-(NiO)(x) (x = 0.0, 0.1, 0.2, 0.3) nanocomposites were fabricated by mechanical alloying using Co2MnSi Heusler alloy and NiO nanoparticles. It is revealed that antiferromagnetic NiO nanocrystallines dramatically enhances the magnetoresistance of the nanocomposites more than 20 times larger than that of the NiO-free Co2MnSi alloys at 300 K. The Exchange bias effect of the nanocomposites suggests that the spin-dependent tunneling and scattering at the interfaces of ferromagnetic/antiferromagnetic are responsible for the enhancement of the magnetoresistance.

引用

页码：620 / +

页数：2

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