COERCIVITY AND SWITCHING FIELD OF SINGLE-DOMAIN GAMMA-FE2O3 PARTICLES UNDER CONSIDERATION OF THE DEMAGNETIZING FIELD

被引：7

作者：

FULMEK, PL

HAUSER, H

机构：

[1] Institut für Werkstoffe der Elektrotechnik, Technische Universität Wien, A-1040 Vienna

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 10期

关键词：

D O I：

10.1063/1.358194

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The coherent rotation of the spontaneous polarization in ellipsoidal ferromagnetic single domain particles is calculated under consideration of the magnetocrystalline anisotropy and the true, inner field. Magnetization curves and switching fields are computed for uniaxial and cubic magnetocrystalline and shape anisotropy. Considering only the magnetic energy inside the particle, the resulting switching fields are lower than those predicted by the Stoner-Wohlfarth theory, and they are qualitatively and quantitatively comparable to the results of other models. The comparison to measurements on isolated γ-Fe2O3 particles shows excellent agreement.

引用

页码：6561 / 6563

页数：3

共 14 条

[1]

FULMEK PL, 1994, APPL ELECTROMAGN MAT, V5, P323

[2] On magnetic and electrostatic energy [J].