Synthesis and exchange bias effect of CuFe2O4/NiO nanocomposites

被引：14

作者：

Tian, Z. M. ^{[1
]}

Yuan, S. L. ^{[1
]}

Liu, L. ^{[1
]}

Yin, S. Y. ^{[1
]}

Jia, L. C. ^{[1
]}

Duan, H. N. ^{[1
]}

Li, P. ^{[1
]}

Wang, C. H. ^{[1
]}

Li, J. Q. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

来源：

SMART MATERIALS & STRUCTURES | 2009年 / 18卷 / 01期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-PROPERTIES; COFE2O4; NANOPARTICLES; ANISOTROPY;

D O I：

10.1088/0964-1726/18/1/015018

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Nanocomposites composed of ferrimagnetic (FM) CuFe2O4 nanoparticles embedded in an antiferromagnetic (AFM) NiO matrix have been synthesized by a new chemical liquid phase route. Microstructural studies indicate that two phases are coexistent in the composites. Magnetic measurements show that the hysteresis loop displays a negative exchange bias behavior with exchange bias field (H-EB) about 110 Oe at 10 K, after the sample was cooled from 300 K with a magnetic field of 10 kOe. Furthermore, the exchange bias field decreases with increasing temperature and disappears at T approximate to 200 K. This exchange bias behavior is interpreted in terms of the magnetic exchange coupling between CuFe2O4 and NiO phases at the FM/AFM interfaces.

引用

页数：4

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