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Dependence of ferromagnetic properties on phosphorus concentration in Ga1-xMnxAs1-yPy

Authors
Li, XiangLiu, XinyuDong, SiningGorsak, CameronFurdyna, Jacek K.Dobrowolska, MargaretBac, Seul-KiLee, SanghoonRouvimov, Sergei
Issue Date
3월-2018
Publisher
A V S AMER INST PHYSICS
Citation
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, v.36, no.2
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
Volume
36
Number
2
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/77218
DOI
10.1116/1.5014055
ISSN
1071-1023
Abstract
A series of Ga1-xMnxAs1-yPy thin films grown on GaAs (100) substrates by molecular beam epitaxy were systematically investigated to establish the effect of phosphorous on structural and magnetic properties of the alloy. Detailed characterization of both as-grown and annealed samples by x-ray diffraction and magnetometry were carried out. Reciprocal space map scans confirmed that the quaternary alloy is fully strained by the substrate throughout its thickness. Magnetization measurements revealed a clear trend of decreasing Curie temperature with increasing P concentration, and revealed that the magnetic easy axis gradually turns from in-plane to out-to-plane orientation as P concentration increases. Published by the AVS.
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