Three-dimensional magnetization reversal measurements in nanoparticles

被引：69

作者：

Bonet, E

Wernsdorfer, W

Barbara, B

Benoît, A

Mailly, D

Thiaville, A

机构：

[1] CNRS, Lab Louis Neel, F-38042 Grenoble, France

[2] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

[3] CNRS, F-92220 Bagneux, France

[4] Univ Paris Sud, LPS, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.83.4188

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first three-dimensional switching field measurements of an individual nanometer-sized magnetic particle are presented. The angular dependence of the switching held can be described by the model of uniform rotation of magnetization. However, the anisotropy function proposed by Stoner and Wohlfarth appears to be simplistic. In order to reproduce the measured switching fields, one has to take into account higher order anisotropy terms. These terms are very important to understand dynamical magnetization reversal properties in the classical and the quantum regimes.

引用

页码：4188 / 4191

页数：4

共 13 条

[1] Thermally activated relaxation time of a single domain ferromagnetic particle subjected to a uniform field at an oblique angle to the easy axis: Comparison with experimental observations [J].