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	Structure, magnetization, and low-temperature spin dynamic behavior of zincblende mn-rich mn(ga)as nanoclusters embedded in gaas
	Wang, W. Z.; Deng, J. J.; Lu, J.; Sun, B. Q.; Wu, X. G.; Zhao, J. H.
刊名	Journal of applied physics
	2009-03-01
卷号	105期号:5页码:6
关键词	Annealing Curie temperature Ferromagnetic materials Gallium arsenide Iii-v semiconductors Magnetic susceptibility Magnetisation Manganese compounds Nanofabrication Nanostructured materials Rkky interaction Semiconductor thin films Semimagnetic semiconductors Spin dynamics
ISSN号	0021-8979
DOI	10.1063/1.3080246
通讯作者	Zhao, j. h.(jhzhao@red.semi.ac.cn)
英文摘要	We have fabricated a set of samples of zincblende mn-rich mn(ga)as clusters embedded in gaas matrices by annealing (ga,mn)as films with different nominal mn content at 650 degrees c. for the samples with mn content no more than 4.5%, the curie temperature reaches nearly 360 k. however, when mn content is higher than 5.4%, the samples exhibit a spin-glass-like behavior. we suggest that these different magnetic properties are caused by the competing result of dipolar and ruderman-kittel-kasuya-yosida interaction among clusters. the low-temperature spin dynamic behavior, especially the relaxation effect, shows the extreme creeping effect which is reflected by the time constant tau of similar to 10(11) s at 10 k. we explain this phenomenon by the hierarchical model based on the mean-field approach. we also explain the memory effect by the relationship between the correlation function and the susceptibility.
WOS关键词	MAGNETISM ; GLASSES ; PHASE ; SEMICONDUCTORS ; (GA,MN)AS ; RELAXATION ; FIELD ; MN)AS ; (GA
WOS研究方向	Physics
WOS类目	Physics, Applied
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000264156300067
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2427662
专题	半导体研究所
通讯作者	Zhao, J. H.
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	Wang, W. Z.,Deng, J. J.,Lu, J.,et al. Structure, magnetization, and low-temperature spin dynamic behavior of zincblende mn-rich mn(ga)as nanoclusters embedded in gaas[J]. Journal of applied physics,2009,105(5):6.
APA	Wang, W. Z.,Deng, J. J.,Lu, J.,Sun, B. Q.,Wu, X. G.,&Zhao, J. H..(2009).Structure, magnetization, and low-temperature spin dynamic behavior of zincblende mn-rich mn(ga)as nanoclusters embedded in gaas.Journal of applied physics,105(5),6.
MLA	Wang, W. Z.,et al."Structure, magnetization, and low-temperature spin dynamic behavior of zincblende mn-rich mn(ga)as nanoclusters embedded in gaas".Journal of applied physics 105.5(2009):6.

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