Magnetic and reversible magnetocaloric properties of (Gd1-xDyx)(4)Co-3 ferrimagnets

doi:10.1063/1.3075627

IMR OpenIR

	Magnetic and reversible magnetocaloric properties of (Gd1-xDyx)(4)Co-3 ferrimagnets
	Zhang, Q.1; Li, B.; Zhao, X. G.; Zhang, Z. D.
通讯作者	Zhang, Q.(qzhangemail@gmail.com)
	2009-03-01
发表期刊	JOURNAL OF APPLIED PHYSICS
ISSN	0021-8979
卷号	105 期号:5 页码:4
摘要	Magnetic properties and magnetocaloric effect of the ferrimagnetic compounds Gd4Co3 and (Gd0.9Dy0.1)(4)Co-3 have been studied. In Gd4Co3, two successive magnetic-entropy changes occur due to a spin-reorientation transition at T-SR=163 K and a ferrimagnetic-magnetic ordering transition at T-C=220 K. For a field change from 0 to 5 T, -Delta S-M(max) at T-C is 5.74 J/kg K, the full width at half maximum (delta T-FWHM) of the -Delta S-M versus T curve has a high value of 131 K, and the refrigerant capacity is as high as 575 J/kg. T-C can easily be tuned by Dy substitution for Gd and the magnetic-entropy change is increased simultaneously. -Delta S-M(max) of (Gd0.9Dy0.1)(4)Co-3 at T-C=145 K for the same field change has increased to 8.47 J/kg K. Our studies suggest that the successive magnetic transitions could enlarge the temperature interval, which makes this type of material meaningful for magnetic refrigeration in wider temperature regions than conventional materials.
关键词	cobalt alloys dysprosium alloys entropy ferrimagnetic materials gadolinium alloys magnetic cooling magnetic structure magnetic transition temperature
资助者	National Natural Science Foundation of China
DOI	10.1063/1.3075627
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[30331030] ; National Natural Science Foundation of China[50831006]
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000264156300057
出版者	AMER INST PHYSICS
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/95952
专题	中国科学院金属研究所
通讯作者	Zhang, Q.
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Q.,Li, B.,Zhao, X. G.,et al. Magnetic and reversible magnetocaloric properties of (Gd1-xDyx)(4)Co-3 ferrimagnets[J]. JOURNAL OF APPLIED PHYSICS,2009,105(5):4.
APA	Zhang, Q.,Li, B.,Zhao, X. G.,&Zhang, Z. D..(2009).Magnetic and reversible magnetocaloric properties of (Gd1-xDyx)(4)Co-3 ferrimagnets.JOURNAL OF APPLIED PHYSICS,105(5),4.
MLA	Zhang, Q.,et al."Magnetic and reversible magnetocaloric properties of (Gd1-xDyx)(4)Co-3 ferrimagnets".JOURNAL OF APPLIED PHYSICS 105.5(2009):4.