Properties of exchange interaction in Yb3Fe5O12 under extreme conditions

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	Properties of exchange interaction in Yb3Fe5O12 under extreme conditions
	Wang W ; Li DY
刊名	journal of magnetism and magnetic materials
	2009
卷号	321 期号:19 页码:3307-3310
关键词	Exchange interaction Anisotropy Temperature dependence Iron garnet
ISSN号	0304-8853
通讯作者	wang w beijing univ chem technol sch sci dept phys & elect beijing 100029 peoples r china. e-mail address: wangwei@mail.buct.edu.cn
中文摘要	in yb3fe5o12, the exchange effective field can be expressed as h-eff = -lambda center dot center dot center dot m-fe = -lambda chi(eff)center dot center dot center dot h-e = -gamma center dot center dot center dot h-e where gamma is named as the exchange field parameter and h-e is the external magnetic field. then, in this paper, by the discussions on the characteristics of the exchange field parameter gamma, the properties of exchange interaction in ytterbium iron garnet (yb3fe5o12) are analyzed under extreme conditions (high magnetic fields and low temperatures). our theory suggests that the exchange field parameter gamma is the function of the temperatures under different external magnetic fields, and gamma = a+b center dot center dot center dot t+c center dot center dot center dot t-2, where the coefficients a, b, c are associated with the external magnetic fields and the magnetized directions. thus, the temperature-dependence, field-dependence and anisotropic characteristics of the exchange interaction in yb3fe5o12 are revealed. also, excellent fits to the available experiments are obtained. (c) 2009 elsevier b.v. all rights reserved.
学科主题	半导体材料
收录类别	SCI
资助信息	young scholars fund of beijing university of chemical technology qn0724 state key laboratory of integrated optoelectronics institute of semiconductors chinese academy of sciences this work is supported by the young scholars fund of beijing university of chemical technology under grant no. qn0724 and by the state key laboratory of integrated optoelectronics institute of semiconductors chinese academy of sciences.
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/7099]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Wang W,Li DY. Properties of exchange interaction in Yb3Fe5O12 under extreme conditions[J]. journal of magnetism and magnetic materials,2009,321(19):3307-3310.
APA	Wang W,&Li DY.(2009).Properties of exchange interaction in Yb3Fe5O12 under extreme conditions.journal of magnetism and magnetic materials,321(19),3307-3310.
MLA	Wang W,et al."Properties of exchange interaction in Yb3Fe5O12 under extreme conditions".journal of magnetism and magnetic materials 321.19(2009):3307-3310.