Magnetic properties and magnetocaloric effects in amorphous and crystalline Gd55Co35Ni10 ribbons
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- 作者：XiChun Zhong (15082)
PengFei Tang (15082)
BeiBei Gao (15082)
JiXiong Min (15082)
ZhongWu Liu (15082)
ZhiGang Zheng (15082)
DeChang Zeng (15082)
HongYa Yu (15082)
WanQi Qiu (15082) - 关键词：Gd55Co35Ni10 ribbon ; magnetocaloric effect ; magnetic refrigeration
- 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
- 出版年：2013
- 出版时间：June 2013
- 年：2013
- 卷：56
- 期：6
- 页码：1096-1099
- 全文大小：617KB
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PengFei Tang (15082)
BeiBei Gao (15082)
JiXiong Min (15082)
ZhongWu Liu (15082)
ZhiGang Zheng (15082)
DeChang Zeng (15082)
HongYa Yu (15082)
WanQi Qiu (15082)
15082. School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China - ISSN：1869-1927
文摘
The magnetic properties and magnetocaloric effects of amorphous and crystalline Gd55Co35Ni10 ribbons are investigated. A main phase with a Ho12Co7-type monoclinic structure (space group P21/c) and a minor phase with a Ho4Co3-type hexagonal structure (space group P63/m) are obtained for crystalline ribbon after annealing. The amorphous ribbons order ferromagnetically and undergo a second-order transition at 192 K. For crystalline Gd55Co35Ni10 ribbons, two magnetic phase transitions occur at 158 and 214 K, respectively. The peak value of ?οem class="a-plus-plus">S M under a field change of 0- T is 6.5 J/kg K at 192 K for amorphous Gd55Co35Ni10 ribbons. A relatively large magnetic entropy change (?.0 J/kg K) under a field change of 0- T for the crystalline Gd55Co35Ni10 ribbons is obtained in the temperature interval range of 154-14 K. The large platform of magnetic entropy change and the negligible thermal/magnetic hysteresis loss mean the crystalline Gd55Co35Ni10 compound can satisfy the requirement of the Ericsson-type refrigerator working in the temperature range from 154 K to 214 K.