Formation of nanoscale ferromagnetic MnAs crystallites in low-temperature grown GaAs

被引：99

作者：

Wellmann, PJ

Garcia, JM

Feng, JL

Petroff, PM

机构：

[1] Materials Department, Univ. of California in Santa Barbara, Santa Barbara

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 17期

关键词：

D O I：

10.1063/1.120109

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the formation of nanosize ferromagnetic MnAs crystallites imbedded in low-temperature grown GaAs using Mn+ ion implantation and subsequent annealing. The structural and magnetic properties of the crystallites have been characterized by transmission electron microscopy. electron beam induced x-ray fluorescence, and superconducting quantum interference device magnetometry. After an optimized thermal annealing at 750 degrees C, MnAs crystallites of 50 nm in size are formed. These nanomagnets show room temperature ferromagnetism. (C) 1997 American Institute of Physics. [S0003-6951(97)04343-X].

引用

页码：2532 / 2534

页数：3

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