Magnetocaloric effect in Er-Al-Co bulk metallic glasses

被引：11
|
作者：
Hui XiDong [1 ]
Xu ZhiYi [1 ]
Wu Yuan [1 ]
Chen XiaoHua [1 ]
Liu XiongJun [1 ]
Lu ZhaoPing [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2011年 / 56卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Er-Al-Co bulk metallic glasses; magnetocaloric effect; Curie temperature; refrigeration capacity; HIGH THERMAL-STABILITY; ALLOYS;
D O I：
10.1007/s11434-011-4855-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A series of Er-Al-Co bulk metallic glasses (BMGs) have been prepared by the copper mold casting method. The glass forming ability and magnetocaloric effect (MCE) for these alloys have been investigated. The second-order magnetic transition from para-magnetic to ferromagnetic states takes place at about 9 K. These BMGs exhibit excellent MCE because of their large effective magneton number; Er56Al24Co20 BMG has a maximum entropy change and refrigeration capacity of 16.06 J kg(-1) K-1 and 546 J kg(-1), respectively, under the field of 50 kOe (10 kOe=795.775 kA/m) indicating that these BMGs are potential candidate magnetic materials for hydrogen liquefaction.
引用
收藏
页码：3978 / 3983
页数：6
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