Magnetic Dielectric and Magnetoelectric Properties of Magnetoelectric Nano-composites xCoAl0.2Fe1.8O4+(1-x)BaTiO3

doi:10.3724/SP.J.1077.2010.01155

Journal of Inorganic Materials ›› 2010, Vol. 25 ›› Issue (11): 1155-1158.DOI: 10.3724/SP.J.1077.2010.01155

• Research Paper • Previous Articles Next Articles

Magnetic Dielectric and Magnetoelectric Properties of Magnetoelectric Nano-composites xCoAl_0.2Fe_1.8O₄+(1-x)BaTiO₃

GAI Zhen-Tao¹, YU Li-Ming ¹, ZHOU Yun^1,2, ZHAO Xin-Luo ¹, ZHANG Jin-Cang¹

(1. Department of Physics, Shanghai University, Shanghai 200444, China; 2. Department of Physics, China Jiliang University,
Hangzhou 310018, China)

Received:2010-02-21 Revised:2010-05-10 Published:2010-11-20 Online:2010-11-01
Supported by:
National Natural Science Foundation of China (10974131) ;Shanghai Nano-technology Promotion Center and the Science &Technology Committee of Shanghai Municipality (0952nm07100)

Abstract

Abstract: Magnetoelectric nano-composites xCoAl_0.2Fe_1.8O₄+(1-x)BaTiO₃ were prepared by Sol-Gel method. The presence of perovskite BaTiO₃ and spinel CoAl_0.2Fe_1.8O₄ in the sintered composites was proved by XRD patterns. SEM images showed that particle size of composite was uniform. The magnetic property of composites was tested by magnetic hysteresis loops and dispersion of dielectric constant was explained with Koops two layer inhomogeneous dielectric structure model. The maximum value of magnetoelectric voltage coefficient viz. 1.075×10^-2V/A was obtained for 0.20CoAl_0.2Fe_1.8O₄+0.80BaTiO₃ composite at the DC magnetic bias field of 1.35×10⁵A/m.

Key words: dielectric property, magnetic property, magnetoelectric voltage coefficient

CLC Number:

TM277

GAI Zhen-Tao, YU Li-Ming, ZHOU Yun, ZHAO Xin-Luo, ZHANG Jin-Cang. Magnetic Dielectric and Magnetoelectric Properties of Magnetoelectric Nano-composites xCoAl_0.2Fe_1.8O₄+(1-x)BaTiO₃[J]. Journal of Inorganic Materials, 2010, 25(11): 1155-1158.

References

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Magnetic Dielectric and Magnetoelectric Properties of Magnetoelectric Nano-composites xCoAl_0.2Fe_1.8O₄+(1-x)BaTiO₃

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