High temperature thermoelectric power studies of cobalt and titanium substituted barium hexagonal ferrites

被引：8

作者：

Ravinder, D ^{[1
]}

Shalini, P

Mahesh, P

Boyanov, BS

机构：

[1] Osmania Univ, Dept Phys, Post Grad Coll Sci, Hyderabad 500007, Andhra Pradesh, India

[2] Paisij Hilendarski Univ Plovdiv, Dept Inorgan Chem Technol, Plovdiv 4000, Bulgaria

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 268卷 / 1-2期

关键词：

thermoelectric power; Ba-Co-Ti hexagonal ferrites; Curie temperatures; electrical conductivity; charge carrier concentration;

D O I：

10.1016/S0304-8853(03)00491-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermoelectric power studies of cobalt and titanium substituted barium hexagonal ferrites of various compositions were investigated from room temperature to well beyond the Curie temperature by the differential method. The Seebeck Coefficient is negative for all the compositions showing that these ferrites behave as n-type semiconductors. Plots of Seebeck coefficient vs. temperature show a maximum at Curie temperature. On the basis of these results an explanation for the conduction mechanism in Ba-Co-Ti mixed ferrites is suggested. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：154 / 158

页数：5

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