NANOPHASE MAGNETIC-MATERIALS - SIZE AND INTERACTION EFFECTS ON STATIC AND DYNAMICAL PROPERTIES OF FINE PARTICLES

被引：35

作者：

DORMANN, JL ^{[1
]}

FIORANI, D ^{[1
]}

机构：

[1] CNR, ICMAT, I-00016 MONTEROTONDO, ITALY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 140卷

关键词：

D O I：

10.1016/0304-8853(94)00591-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Some magnetic properties of nanophase particles are reviewed and discussed. Theoretical models are proposed for the static and dynamical properties accounting for volume distribution, random position of anisotropy axis and interparticle interactions. Statistics allows the determination of the additional energy barrier coming from the interparticle interactions. The behavior of the superparamagnetic susceptibility is interpreted using the Onsager field and thermoremanent magnetization treatment is discussed. The model's predictions are in agreement with results obtained on Fe and gamma-Fe2O3 particles.

引用

页码：415 / 418

页数：4

共 19 条

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