High-entropy bulk metallic glasses as promising magnetic refrigerants

被引：97

作者：

Huo, Juntao ^{[1
,2
]}

Huo, Lishan ^{[1
,2
]}

Li, Jiawei ^{[1
,2
]}

Men, He ^{[1
,2
]}

Wang, Xinmin ^{[1
,2
]}

Inoue, Akihisa ^{[1
,2
,3
]}

Chang, Chuntao ^{[1
,2
]}

Wang, Jun-Qiang ^{[1
,2
]}

Li, Run-Wei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China

[3] Josai Int Univ, Int Inst Green Mat, Tougane 2838555, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 07期

基金：

中国国家自然科学基金;

关键词：

TRANSITION; GD; TB;

D O I：

10.1063/1.4908286

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, the Ho20Er20Co20Al20RE20 (RE = Gd, Dy, and Tm) high-entropy bulk metallic glasses (HE-BMGs) with good magnetocaloric properties are fabricated successfully. The HE-BMGs exhibit a second-order magnetic phase transition. The peak of magnetic entropy change (Delta S-M (pk)) and refrigerant capacity (RC) reaches 15.0 J kg(-1) K-1 and 627 J kg(-1) at 5 T, respectively, which is larger than most rare earth based BMGs. The heterogeneous nature of glasses also contributes to the large Delta S-M (pk) and RC. In addition, the magnetic ordering temperature, Delta S-M (pk) and RC can be widely tuned by alloying different rare earth elements. These results suggest that the HE-BMGs are promising magnetic refrigerant at low temperatures. (C) 2015 AIP Publishing LLC.

引用

页数：5

共 31 条

[1] Effect of rare earth additions on magnetic properties of Fe82Nb2B14RE2 (RE = Y, Gd, Tb and Dy) amorphous alloys [J].