中国物理B ›› 2020, Vol. 29 ›› Issue (7): 77501-077501.doi: 10.1088/1674-1056/ab90f3

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Metamagnetic transition and reversible magnetocaloric effect in antiferromagnetic DyNiGa compound

Yan-Hong Ding(丁燕红), Fan-Zhen Meng(孟凡振), Li-Chen Wang(王利晨), Ruo-Shui Liu(刘若水), Jun Shen(沈俊)   

  1. 1 School of Electrical and Electronic Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China;
    2 Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    3 Department of Physics, Capital Normal University, Beijing 100048, China;
    4 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2020-02-11 修回日期:2020-04-20 出版日期:2020-07-05 发布日期:2020-07-05
  • 通讯作者: Yan-Hong Ding, Li-Chen Wang E-mail:lucydyh@163.com;wanglichen@mail.ipc.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51701130 and 51925605), the Natural Science Foundation of Tianjin, China (Grant Nos. 18ZXCLGX00040 and 15JCZDJC38700), and the National Key Research and Development Program of China (Grant Nos. 2019YFA0704900, 2019YFA0705000, 2019YFA0705100, 2019YFA0705200, and 2019YFA0705300).

Metamagnetic transition and reversible magnetocaloric effect in antiferromagnetic DyNiGa compound

Yan-Hong Ding(丁燕红)1, Fan-Zhen Meng(孟凡振)1, Li-Chen Wang(王利晨)2,3,4, Ruo-Shui Liu(刘若水)3, Jun Shen(沈俊)2,4   

  1. 1 School of Electrical and Electronic Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China;
    2 Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    3 Department of Physics, Capital Normal University, Beijing 100048, China;
    4 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-02-11 Revised:2020-04-20 Online:2020-07-05 Published:2020-07-05
  • Contact: Yan-Hong Ding, Li-Chen Wang E-mail:lucydyh@163.com;wanglichen@mail.ipc.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51701130 and 51925605), the Natural Science Foundation of Tianjin, China (Grant Nos. 18ZXCLGX00040 and 15JCZDJC38700), and the National Key Research and Development Program of China (Grant Nos. 2019YFA0704900, 2019YFA0705000, 2019YFA0705100, 2019YFA0705200, and 2019YFA0705300).

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摘要： Rare-earth (R)-based materials with large reversible magnetocaloric effect (MCE) are attracting much attention as the promising candidates for low temperature magnetic refrigeration. In the present work, the magnetic properties and MCE of DyNiGa compound with TiNiSi-type orthorhombic structure are studied systematically. The DyNiGa undergoes a magnetic transition from antiferromagnetic (AFM) to paramagnetic state with Néel temperature TN = 17 K. Meanwhile, it does not show thermal and magnetic hysteresis, revealing the perfect thermal and magnetic reversibility. Moreover, the AFM state can be induced into a ferromagnetic state by a relatively low field, and thus leading to a large reversible MCE, e.g., a maximum magnetic entropy change (-ΔSM) of 10 J/kg·K is obtained at 18 K under a magnetic field change of 5 T. Consequently, the large MCE without thermal or magnetic hysteresis makes the DyNiGa a competitive candidate for magnetic refrigeration of hydrogen liquefaction.

关键词: DyNiGa, antiferromagnetic, magnetocaloric effect, first-order phase transition

Abstract: Rare-earth (R)-based materials with large reversible magnetocaloric effect (MCE) are attracting much attention as the promising candidates for low temperature magnetic refrigeration. In the present work, the magnetic properties and MCE of DyNiGa compound with TiNiSi-type orthorhombic structure are studied systematically. The DyNiGa undergoes a magnetic transition from antiferromagnetic (AFM) to paramagnetic state with Néel temperature TN = 17 K. Meanwhile, it does not show thermal and magnetic hysteresis, revealing the perfect thermal and magnetic reversibility. Moreover, the AFM state can be induced into a ferromagnetic state by a relatively low field, and thus leading to a large reversible MCE, e.g., a maximum magnetic entropy change (-ΔSM) of 10 J/kg·K is obtained at 18 K under a magnetic field change of 5 T. Consequently, the large MCE without thermal or magnetic hysteresis makes the DyNiGa a competitive candidate for magnetic refrigeration of hydrogen liquefaction.

Key words: DyNiGa, antiferromagnetic, magnetocaloric effect, first-order phase transition

中图分类号:  (Magnetocaloric effect, magnetic cooling)

  • 75.30.Sg
75.50.Bb (Fe and its alloys) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)