Magnetization reversal process in FePt L10 nanoparticles

SCRIPTA MATERIALIA

卷:53

Article

Okamoto, S ; Kikuchi, N ; Kitakami, O ; Shimada, Y

关键词: iron alloys;    platinum-group;    magnetic thin films;    magnetic anisotropy;    magnetic recording;   

DOI  :  10.1016/j.scriptamat.2005.04.034

来源: Elsevier

【 摘 要 】

We have studied the magnetization reversals of FePt L1(0) particles. Lithographically fabricated single FePt particles and well isolated epitaxial FePt L1(0) nanoparticles have been investigated for a wide range of particle diameters D. Careful analyses of the experiments have revealed that for particles larger than 20 nm the magnetization reversal behaviors are governed by either nucleation or expansion of a reversed domain depending on the temperature, and the coherent rotation mode becomes dominant for D < 20 nm. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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