中国物理B ›› 2015, Vol. 24 ›› Issue (3): 37501-037501.doi: 10.1088/1674-1056/24/3/037501

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Low field induced giant anisotropic magnetocaloric effect in DyFeO3 single crystal

柯亚娇, 张向群, 葛恒, 马跃, 成昭华   

  1. State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2014-10-23 修回日期:2014-11-03 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant Nos. 2010CB934202, 2011CB921801, and 2012CB933102) and the National Natural Science Foundation of China (Grant Nos. 11174351, 11274360, and 11034004).

Low field induced giant anisotropic magnetocaloric effect in DyFeO3 single crystal

Ke Ya-Jiao (柯亚娇), Zhang Xiang-Qun (张向群), Ge Heng (葛恒), Ma Yue (马跃), Cheng Zhao-Hua (成昭华)   

  1. State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-10-23 Revised:2014-11-03 Online:2015-03-05 Published:2015-03-05
  • Contact: Cheng Zhao-Hua E-mail:zhcheng@iphy.ac.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant Nos. 2010CB934202, 2011CB921801, and 2012CB933102) and the National Natural Science Foundation of China (Grant Nos. 11174351, 11274360, and 11034004).

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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 -ΔSMR=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.

关键词: magnetocaloric effect, rotating field entropy change, magnetocrystalline anisotropy, DyFeO3 single crystal

Abstract:

We have investigated the anisotropic magnetocaloric effect and the rotating field magnetic entropy in DyFeO3 single crystal. A giant rotating field entropy change of -ΔSMR=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.

Key words: magnetocaloric effect, rotating field entropy change, magnetocrystalline anisotropy, DyFeO3 single crystal

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.30.Sg (Magnetocaloric effect, magnetic cooling) 75.47.Lx (Magnetic oxides)