Magnetic and electrical studies in Al- and Co-substituted M-type hexagonal ferrites

被引：10

作者：

Darokar, SS

Rewatkar, KG ^{[1
]}

Kulkarni, DK

机构：

[1] DMV, Dept Phys, Nawargaon 441223, Chandrapur, India

[2] Inst Sci, Dept Phys, Nagpur 440001, Maharashtra, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1998年 / 56卷 / 01期

关键词：

hexaferrites; Curie temperature; seebeck coefficient; paramagnetic;

D O I：

10.1016/S0254-0584(98)00089-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lithium ferrites Li0.5Fe6.5Me6O19 (Me = Al and Co) are found to exhibit M-type symmetry. The lattice parameters have been determined on a polycrystalline material and magnetic, electrical and Seebeck coefficient measurements have also been carried out. The substitution of Al3+ ion for Fe3+ ion reduces the magnetization, while Co3+ enhances the Curie temperature. These differences are explained on the basis of exchange interactions within the sublattices. A Seebeck study reveals that both the samples are n-type semiconductors. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：84 / 86

页数：3

共 16 条

[1] SUBSTITUTION DANS LES HEXAFERRITES DE LION FE-3+ PAR AL-3+, GA-3+, CR-3+ [J].