Fast magnetization reversal of GdFeCo induced by femtosecond laser pulses

被引：128

作者：

Hohlfeld, J

Gerrits, T

Bilderbeek, M

Rasing, T

Awano, H

Ohta, N

机构：

[1] Univ Nijmegen, Inst Mat Res, NL-6525 ED Nijmegen, Netherlands

[2] Hitachi Maxell Ltd, Tsukuba Res Lab, Yawara 3002496, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.65.012413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pump-pulse induced magnetization reversal of amorphous Gd23.1Fe71.9Co5.0 showed a subpicosecond magnetization collapse followed by a slower reversal. The reversal dynamics is well described by the Bloch equation via a reversal time that does not depend on temperature, but strongly decreases with increasing pump fluence. A comparison to data obtained in external saturation field and in remanence opened the way to separate the contributions due to temperature induced effects within single domains from those related to field induced domain formation.

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页码：1 / 4

页数：4

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