Effect of Ni substitution on the formability and magnetic properties of Gd50Co50 amorphous alloy

被引：15
作者：
Tang, Ben-Zheng [1 ,2 ,3 ]
Liu, Xiao-Ping [1 ]
Li, Dong-Mei [1 ]
Yu, Peng [1 ]
Xia, Lei [2 ,3 ]
机构：
[1] Chongqing Normal Univ, Coll Phys & Elect Engn, Chongqing Key Lab Photoelect Funct Mat, Chongqing 401331, Peoples R China
[2] Shanghai Univ, Lab Microstruct, Shanghai 200072, Peoples R China
[3] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China
来源：
CHINESE PHYSICS B | 2020年 / 29卷 / 05期
基金：
中国国家自然科学基金;
关键词：
amorphous alloy; glass forming ability; magnetocaloric effect; adiabatic temperature rise; REFRIGERANT CAPACITY; ROOM-TEMPERATURE; ENTROPY CHANGE; ICE POINT; WATER; GLASS; FE;
D O I：
10.1088/1674-1056/ab7da8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A small amount of Ni was added into the binary Gd50Co50 amorphous alloy to replace Gd in order to obtain ternary Co50Gd50 - xNix (x = 1, 2, and 3) amorphous alloys. Compared to the binary Gd50Co50 amorphous alloy, the Co50Gd50 - xNix amorphous alloys show an enhanced Curie temperature (T-C) with a weakened formability. The maximum magnetic entropy change (-Delta Smpeak <i) of the Co50Gd50-xNix amorphous alloys is found to decrease with the increasing T-C. The adiabatic temperature rise (Delta T-ad) of the Co50Gd47Ni3 amorphous alloy is superior to that of the Fe-based metallic glasses at room temperature. The variation of the T-C and -Delta Smpeak <i of the Gd50Co50 amorphous alloy with Ni addition, and the mechanism involved, were discussed.
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页数：5
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