Slow relaxation of magnetization in MnAs nanomagnets on GaAs(001) -: art. no. 032504

被引：12

作者：

Takagaki, Y ^{[1
]}

Herrmann, C ^{[1
]}

Wiebicke, E ^{[1
]}

Herfort, J ^{[1
]}

Däweritz, L ^{[1
]}

Ploog, KH ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

关键词：

D O I：

10.1063/1.2166196

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate slow relaxation of the magnetization in MnAs nanoparticles fabricated from epitaxially grown films on GaAs(001). In disks having a diameter as small as 100 nm and a thickness of 50 nm, the decay of the magnetization at 27 degrees C, which is merely similar to 10 degrees C below the Curie temperature T-C, is less than 1% over a period of one day. The large uniaxial magnetocrystalline anisotropy and the abrupt loss of the ferromagnetism at T-C of MnAs are responsible for the slow relaxation. (c) 2006 American Institute of Physics.

引用

页码：1 / 3

页数：3

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