Negative remanent magnetization of fine particles with competing cubic and uniaxial anisotropies

被引：55

作者：

Geshev, J ^{[1
]}

Viegas, ADC ^{[1
]}

Schmidt, JE ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 84卷 / 03期

关键词：

D O I：

10.1063/1.368214

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic properties of noninteracting single-domain particles whose anisotropy is made up of a cubic magnetocrystalline and a uniaxial components were investigated. Various directions of the uniaxial anisotropy were considered and the dependencies of the reduced remanence as a function of the ratio between the two anisotropies were obtained. It was found that for sufficiently strong uniaxial anisotropy and random arrangement of the particle orientations, reduced remanence lower than 0.5 is, in general, an intrinsic property of the system due to the negative remanent magnetization of same of the particles. (C) 1998 American Institute of Physics. [S0021-8979(98)03715-3].

引用

页码：1488 / 1492

页数：5

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