Electrical conductivity of cerium substituted Mn-Zn ferrites

被引：25

作者：

Ravinder, D ^{[1
]}

Kumar, BR

机构：

[1] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

[2] Osmania Univ, Postgrad Coll Sci, Dept Phys, Hyderabad 500004, Andhra Pradesh, India

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 11期

关键词：

Mn-Zn-Ce ferrites; electrical conductivity; activation energy; Curie temperature; electrical resistivity;

D O I：

10.1016/S0167-577X(02)01060-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrical conductivity of cerium substituted Mn-Zn ferrites have been investigated as a function composition and temperature. Mn-Zn-Ce ferrite with x=0.4 is found to possess minimum electrical conductivity and lowest Seebeck coefficient. Plots of log (sigmaT) vs. 10(3)/T are almost linear and have shown a transition near the Curie temperature except in the case of Mn0.58Zn0.37Ce1.0Fe1.05O4. The activation energy in the ferrimagnetic region is in general less than that in the paramagnetic region. An attempt is made to explain the conduction mechanism in Mn-Zn-Ce ferrites. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1738 / 1742

页数：5

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