CALCULATION OF SPIN-REORIENTATION TEMPERATURE IN ND2FE14B

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	CALCULATION OF SPIN-REORIENTATION TEMPERATURE IN ND2FE14B
	ZHONG XF ; CHING WY ; LAI WY
刊名	journal of applied physics
	1991
卷号	70 期号:10 页码:6146-6148
关键词	MAGNETIC-PROPERTIES ANISOTROPY Y2FE14B ENERGY
ISSN号	0021-8979
通讯作者	zhong xf chinese acad sciinst semicondbeijingpeoples r china
中文摘要	the spin-reorientation phenomenon in nd2fe14b has been investigated using an angular dependent free energy approach. a magnetic hamiltonian which includes the crystal electric field term and the exchange term has been established using realistic band structure results. the temperature dependence of the molecular field is accounted for by introducing the brillouin function and the magnetic hamiltonian is diagonalized within the ground state multiplet of the nd ion. the eigenstates are then used to form the partition function for the free energy. at each temperature, the direction of the molecular field is obtained by searching for the minimum in the angular parameter space of the free energy. our calculations show that for nd2fe14b, the net magnetic anisotropy direction is canted away from the c axis at a temperature close to the experimentally reported spin-reorientation temperature of 150 k. the temperature dependence of the magnetic structure is found to be very sensitive to the size of the second order crystal field parameter b20.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-11-15
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/14245]
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	ZHONG XF,CHING WY,LAI WY. CALCULATION OF SPIN-REORIENTATION TEMPERATURE IN ND2FE14B[J]. journal of applied physics,1991,70(10):6146-6148.
APA	ZHONG XF,CHING WY,&LAI WY.(1991).CALCULATION OF SPIN-REORIENTATION TEMPERATURE IN ND2FE14B.journal of applied physics,70(10),6146-6148.
MLA	ZHONG XF,et al."CALCULATION OF SPIN-REORIENTATION TEMPERATURE IN ND2FE14B".journal of applied physics 70.10(1991):6146-6148.