Low field induced giant anisotropic magnetocaloric effect in DyFeO3 single crystal

被引：59

作者：

Ke Ya-Jiao

Zhang Xiang-Qun

Ge Heng

Ma Yue

Cheng Zhao-Hua ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

来源：

CHINESE PHYSICS B | 2015年 / 24卷 / 03期

基金：

中国国家自然科学基金;

关键词：

magnetocaloric effect; rotating field entropy change; magnetocrystalline anisotropy; DyFeO3 single crystal;

D O I：

10.1088/1674-1056/24/3/037501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the anisotropic magnetocaloric effect and the rotating field magnetic entropy in DyFeO3 single crystal. A giant rotating field entropy change of -Delta S-M(R) = 16.62 J/kg.K was achieved from b axis to c axis in bc plane at 5 K for a low field change of 20 kOe. The large anisotropic magnetic entropy change is mainly accounted for the 4f electron of rare-earth Dy3+ ion. The large value of rotating field entropy change, together with large refrigeration capacity and negligible hysteresis, suggests that the multiferroic ferrite DyFeO3 singlecrystal could be a potential material for anisotropic magnetic refrigeration at low field, which can be realized in the practical application around liquid helium temperature region.

引用

页数：5

共 29 条

[1] Anisotropy-enhanced giant reversible rotating magnetocaloric effect in HoMn2O5 single crystals [J].