Magneto-caloric response of the Gd60Co25Al15 metallic glasses

被引：51

作者：

Xia, L. ^{[1
,2
]}

Guan, Q. ^{[1
,2
]}

Ding, D. ^{[1
,2
]}

Tang, M. B. ^{[3
]}

Dong, Y. D. ^{[1
,2
]}

机构：

[1] Shanghai Univ, Lab Microstruct, Shanghai 200072, Peoples R China

[2] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 19期

关键词：

REFRIGERATION; TEMPERATURE; CAPACITY; NICKEL;

D O I：

10.1063/1.4901263

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magneto-caloric response of the Gd60Co25Al15 amorphous alloys was investigated in this work. The amorphous rod exhibits an excellent magneto-caloric effect with a peak value of magnetic entropy change (-Delta S-m(peak)) up to 10 Jkg(-1) K-1 at 125 K under a field of 5 T, and the highest adiabatic temperature change (Delta T-ad = 5.3 K) under the same field among the bulk metallic glasses yet reported in the literature. In contrast, although the thin amorphous ribbons show similar -Delta S-m(peak) and refrigeration capacity to the as-cast rod under 5 T, the higher -Delta S-m(peak) of the ribbons under a lower magnetic field indicates the different magneto-caloric response between the two amorphous alloys. A more detailed investigation has been performed on the field dependence of -Delta S-m(peak) for a deeper insight into the physical characteristics of the amorphous materials. (C) 2014 AIP Publishing LLC.

引用

页数：4

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