Numerical evaluation of multidimensional energy barriers for FePt and Co particles

被引：5

作者：

Chubykalo, O. A. ^{[1
]}

Chantrell, R. W.

机构：

[1] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain

[2] Seagate Res, Pittsburgh, PA 15222 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

thermal stability; nanoparticles; energy barrier;

D O I：

10.1016/j.jmmm.2003.12.222

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multidimensional energy barriers have been evaluated for periodic hexagonal array and non-regular realistic arrangement of FePt and Co 4 nm particles. We have shown that the magnetostatic interactions broaden the energy barrier distribution and displace its center to larger values. The FePt particles have been shown to possess an extremely narrow energy barrier distribution comparatively to that of the Co particles. The validity of the widely used Pfeiffer one-particle approximation is discussed. (C) 2003 Published by Elsevier B.V.

引用

页码：E1169 / E1171

页数：3

共 6 条

[1] Density of energy barriers in fine magnetic particle systems [J].