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	Ferromagnetic nature of (ga, cr)as epilayers revealed by magnetic circular dichroism
	Wu, H.; Gan, H. D.; Zheng, H. Z.; Lu, J.; Zhu, H.; Ji, Y.; Li, G. R.; Zhao, J. H.
刊名	Solid state communications
	2011-03-01
卷号	151期号:6页码:456-459
关键词	Magnetic semiconductors Molecular beam epitaxy Magneto-optical effects
ISSN号	0038-1098
DOI	10.1016/j.ssc.2010.12.037
通讯作者	Zheng, h. z.(hzzheng@red.semi.ac.cn)
英文摘要	A systematic study of magnetic circular dichroism (mcd) was carried out in a wave length range 500-960 nm for (ga(1-x), cr(x))as epilayers with x = 2.38% and 4.59% grown by the low temperature molecular beam epitaxy (lt-mbe) technique. hysteresis characteristics showed up indeed in the magnetic field dependence of both mcd and magnetization measured by the superconductor quantum interference device (squid). the curie temperature of the (ga(1-x), cr(x))as epilayer was determined to be about 12 k by the arrott approach. the present result provides evidences that there is strong coupling of the cr spins to the gaas host band structure in (ga(1-x), cr(x))as samples. that affects the critical point of the semiconductor host, and makes the magnetization behavior in a plot of m similar to b/t (magnetic field divided by temperature) substantially different from standard superparamagnetism. (c) 2011 elsevier ltd. all rights reserved.
WOS关键词	TRANSPORT-PROPERTIES ; SEMICONDUCTOR ; (GA,CR)AS
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000288041000008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2428480
专题	半导体研究所
通讯作者	Zheng, H. Z.
作者单位	Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Wu, H.,Gan, H. D.,Zheng, H. Z.,et al. Ferromagnetic nature of (ga, cr)as epilayers revealed by magnetic circular dichroism[J]. Solid state communications,2011,151(6):456-459.
APA	Wu, H..,Gan, H. D..,Zheng, H. Z..,Lu, J..,Zhu, H..,...&Zhao, J. H..(2011).Ferromagnetic nature of (ga, cr)as epilayers revealed by magnetic circular dichroism.Solid state communications,151(6),456-459.
MLA	Wu, H.,et al."Ferromagnetic nature of (ga, cr)as epilayers revealed by magnetic circular dichroism".Solid state communications 151.6(2011):456-459.

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