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

doi:10.1016/j.jmmm.2003.12.1316

IMR OpenIR

	Magnetic ordering and irreversible magnetization between ZFC and FC states in RCo5Ga7 compounds
	Chang, H ; Guo, YQ ; Liang, JK ; Rao, GH
通讯作者	Chang, H(chang_hong2@yahoo.com.cn)
	2004-07-01
发表期刊	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN	0304-8853
卷号	278 期号:3 页码:306-310
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.
关键词	magnetic properties ScFe6Ga6-type structure magnetic transition
DOI	10.1016/j.jmmm.2003.12.1316
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Condensed Matter
WOS记录号	WOS:000222530100003
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81365
通讯作者	Chang, H
作者单位	1.Chinese Acad Sci, Inst Semicond, Open Lab Mat, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China 4.Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China 5.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
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.