Large refrigerant capacity of RGa (R = Tb and Dy) compounds

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	Large refrigerant capacity of RGa (R = Tb and Dy) compounds
	Zheng, XQ ; Chen, J ; Shen, J ; Zhang, H ; Xu, ZY ; Gao, WW ; Wu, JF ; Hu, FX ; Sun, JR ; Shen, BG
刊名	JOURNAL OF APPLIED PHYSICS
	2012
卷号	111 期号:7
关键词	INTERMETALLIC COMPOUNDS MAGNETOCALORIC MATERIALS MAGNETIC-PROPERTIES
ISSN号	0021-8979
通讯作者	Shen, BG: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.
中文摘要	The magnetic properties and magnetocaloric effects (MCEs) of RGa (R = Tb and Dy) compounds are investigated. The TbGa compound exhibits two successive magnetic transitions: spin-reorientation (SR) transition at T-SR = 31 K and second-order ferromagnetic (FM)-paramagnetic (PM) transition at Curie temperature T-C = 154 K, while the DyGa compound undergoes a SR transition with T-SR = 25 K and a FM-PM transition with T-C = 113 K. It is noteworthy that a broad distribution of the magnetic entropy change peak is observed. The values of the refrigerant capacity (RC) for TbGa and DyGa are found to be 620.6 and 381.9 J/kg for a field change of 0-5 T, respectively. And for a field change of 0-7 T, the values are 900 and 584.2 J/kg, respectively. The large value of RC for TbGa and DyGa originates from the combined contribution from SR and FM-PM transitions, which enlarges the temperature span of large MCE. (C) 2012 American Institute of Physics. [doi:10.1063/1.3672842]
收录类别	SCI
资助信息	National Natural Science Foundation of China; Chinese Academy of Sciences; Hi-Tech Research and Development program of China
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40627]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zheng, XQ,Chen, J,Shen, J,et al. Large refrigerant capacity of RGa (R = Tb and Dy) compounds[J]. JOURNAL OF APPLIED PHYSICS,2012,111(7).
APA	Zheng, XQ.,Chen, J.,Shen, J.,Zhang, H.,Xu, ZY.,...&Shen, BG.(2012).Large refrigerant capacity of RGa (R = Tb and Dy) compounds.JOURNAL OF APPLIED PHYSICS,111(7).
MLA	Zheng, XQ,et al."Large refrigerant capacity of RGa (R = Tb and Dy) compounds".JOURNAL OF APPLIED PHYSICS 111.7(2012).