Excellent magnetocaloric effect of a Gd55Al20Co25 bulk metallic glass

被引：27

作者：

Lu, S. ^{[1
]}

Tang, M. B. ^{[2
]}

Xia, L. ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 200050, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 18期

关键词：

Bulk metallic glass; Glass-forming ability; Magnetocaloric effect; ABILITY;

D O I：

10.1016/j.physb.2011.06.006

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this work, we report a Gd55Al20Co25 bulk metallic glass (BMG) with an excellent magnetocaloric response against the magnetic field variation. The as-cast Gd55Al20Co25 rod with typical amorphous characteristics was fabricated by a traditional suction casting method. The glass-forming ability (GFA) and the magnetic properties of the BMG were studied. The BMG exhibits a rather high refrigeration capacity (RC), which is resulted by a high peak value of magnetic entropy change (-Delta S-m(peak)=9 J kg(-1) K-1) and the wide temperature range at the half maximum of -Delta S-m(peak) (Delta T=89 K) of the BMG under a field of 5 T. The mechanism for the excellent magnetocaloric effect (MCE) of the BMG was investigated. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3398 / 3401

页数：4

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