Magnetic properties of Ba- and Sr-hexaferrite prepared by mechanical alloying

被引：37

作者：

Ding, J ^{[1
]}

Street, R ^{[1
]}

Nishio, H ^{[1
]}

机构：

[1] TDK CORP, CTR MAT RES, NARITA 286, JAPAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 164卷 / 03期

关键词：

ferrite; irreversible magnetisation; activation volume; magnetic viscosity;

D O I：

10.1016/S0304-8853(96)00406-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Samples of Ba- and Sr-hexaferrite were prepared by mechanical alloying and subsequent heat treatment were found to consist of single domain particles of the single hexaferrite phase. The particles had a wide distribution of anisotropy fields. Study of irreversible magnetisation suggested, that the demagnetisation process is mainly controlled by the Wohlfarth rotation. It was deduced from the results of measurements of magnetic viscosity, that the activation volume was of same order of magnitude as the cube of the domain wall thickness.

引用

页码：385 / 389

页数：5

共 18 条

[1]

CAMPBELL SJ, 1995, J MAGN MAGN MATER, V140, P959

[2] MAGNETIC VISCOSITY IN BA-FERRITE [J].