EXTRAORDINARY HALL-EFFECT (EHE) OF FERROMAGNETIC COMPOSITES IN THE EFFECTIVE-MEDIUM APPROXIMATION

被引：29

作者：

GRANOVSKY, AB ^{[1
]}

VEDYAYEV, AV ^{[1
]}

BROUERS, F ^{[1
]}

机构：

[1] CHU SART TILMAN,INST PHYS,B-4000 LIEGE,BELGIUM

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 136卷 / 1-2期

关键词：

Effective medium approximation - Extraordinary hall effect - Ferromagnetic composites;

D O I：

10.1016/0304-8853(94)90469-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The expression for the EHE coefficient R(s) of ferromagnetic composites is derived in the framework of the effective medium approximation. In the case of a composite ferromagnetic metal-dielectric, R(s) increases monotonically as the concentration of the magnetic component c decreases and in the dielectric region (c less than or equal to 1/3) R(s) = 9R(s1)(1 - c), where R(s1) is the EHE coefficient of the ferromagnetic component. The dependences of R(s) on composition are calculated for composites ferromagnetic-paramagnetic metals, ferromagnet-ferromagnet. The typical relation R(s) similar to rho 2 for uniform ferromagnets, where rho is electroresistivity, is not fulfilled in all the cases considered.

引用

页码：229 / 232

页数：4