Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds

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	Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds
	Chang H ; Guo YQ ; Liang JK ; Rao GH
刊名	journal of magnetism and magnetic materials
	2004
卷号	278 期号:3 页码:306-310
关键词	magnetic properties
ISSN号	0304-8853
通讯作者	chang, h, chinese acad sci, inst semicond, open lab mat, box 912, beijing 100083, peoples r china. 电子邮箱地址: chang_hong2@yahoo.com.cn
中文摘要	the magnetic properties of rco5ga7 (r = y, tb, dy, ho and er) compounds which crystallize in the scfe6ga6-type structure have been studied. the compounds with r, y, tb, dy, ho and er display behaviour similar to semiconductors. the co transition metal sublattice is ferrimagnetic with a very low spontaneous magnetization. the ferrimagnetic ordering observed for r = y, tb, dy, ho and er is due to the transition metal sublattice with transition temperatures at about 295 k. at low temperatures, the magnetic ordering for r tb, dy, ho and er is due to the rare-earth sublattice, which is ferromagnetic with a curie temperature below 5 k. by fitting the linear part of the inverse magnetization, the effective magnetic moment of the r ion is found to be close to its expected theoretical value, with paramagnetic curie temperatures below 5 k. due to the paramagnetic nature of the r sublattice above 60 k, the ferrimagnetic ordering temperature of the co sublattice does not vary with the type of rare-earth ion. the irreversibility of the magnetization of yco5ga7, as measured in zero-field cooled (zfc) and field cooled (fc) states, is attributed to movement of domain walls. application of a large enough applied field completes the movement of the domain wall from the low-temperature to the high-temperature one at 5 k. with a very low magnetic field 100 oe, the difference between the zfc and the fc shrinks. (c) 2004 elsevier b.v. all rights reserved.
学科主题	半导体材料
收录类别	SCI
语种	英语
公开日期	2010-03-09
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/8026]
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	Chang H,Guo YQ,Liang JK,et al. Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds[J]. journal of magnetism and magnetic materials,2004,278(3):306-310.
APA	Chang H,Guo YQ,Liang JK,&Rao GH.(2004).Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds.journal of magnetism and magnetic materials,278(3),306-310.
MLA	Chang H,et al."Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds".journal of magnetism and magnetic materials 278.3(2004):306-310.