中国物理B ›› 2018, Vol. 27 ›› Issue (2): 27501-027501.doi: 10.1088/1674-1056/27/2/027501

所属专题： Virtual Special Topic — Magnetism and Magnetic Materials

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

Magnetocaloric effect in the layered organic-inorganic hybrid (CH3NH3)2CuCl4

Yinina Ma(马怡妮娜), Kun Zhai(翟昆), Liqin Yan(闫丽琴), Yisheng Chai(柴一晟), Dashan Shang(尚大山), Young Sun(孙阳)   

  1. 1. State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2017-10-31 修回日期:2017-12-05 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: Liqin Yan, Young Sun E-mail:lqyan@iphy.ac.cn;youngsun@iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51371193 and 11534015), the Youth Innovation Promotion of the Chinese Academy of Sciences (Grant No. 2013004), and the Science Fund from the Chinese Academy of Sciences (Grant Nos. XDB07030200 and KJZD-EW-M05).

Magnetocaloric effect in the layered organic-inorganic hybrid (CH3NH3)2CuCl4

Yinina Ma(马怡妮娜)1,2, Kun Zhai(翟昆)1, Liqin Yan(闫丽琴)1, Yisheng Chai(柴一晟)1, Dashan Shang(尚大山)1, Young Sun(孙阳)1,2   

  1. 1. State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2017-10-31 Revised:2017-12-05 Online:2018-02-05 Published:2018-02-05
  • Contact: Liqin Yan, Young Sun E-mail:lqyan@iphy.ac.cn;youngsun@iphy.ac.cn
  • About author:75.30.sg; 75.50.-y; 81.07.Pr
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51371193 and 11534015), the Youth Innovation Promotion of the Chinese Academy of Sciences (Grant No. 2013004), and the Science Fund from the Chinese Academy of Sciences (Grant Nos. XDB07030200 and KJZD-EW-M05).

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摘要：

We present a study of magnetocaloric effect of the quasi-two-dimensional (2D) ferromagnet (CH3NH3)2CuCl4 in ab plane (easy-plane). From the measurements of magnetic field dependence of magnetization at various temperatures, we have discovered a large magnetic entropy change associated with the ferromagnetic-paramagnetic transition. The heat capacity measurements reveal an abnormal adiabatic change below the Curie temperature Tc~8.9 K, which is caused by the nature of quasi-2D layered crystal structure. These results suggest that perovskite organic-inorganic hybrids with a layered structure are suitable candidates as working substances in magnetic refrigeration technology.

关键词: magnetocaloric effect, organic-inorganic hybrid, (CH3NH3)2CuCl4

Abstract:

We present a study of magnetocaloric effect of the quasi-two-dimensional (2D) ferromagnet (CH3NH3)2CuCl4 in ab plane (easy-plane). From the measurements of magnetic field dependence of magnetization at various temperatures, we have discovered a large magnetic entropy change associated with the ferromagnetic-paramagnetic transition. The heat capacity measurements reveal an abnormal adiabatic change below the Curie temperature Tc~8.9 K, which is caused by the nature of quasi-2D layered crystal structure. These results suggest that perovskite organic-inorganic hybrids with a layered structure are suitable candidates as working substances in magnetic refrigeration technology.

Key words: magnetocaloric effect, organic-inorganic hybrid, (CH3NH3)2CuCl4

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

  • 75.30.Sg
75.50.-y (Studies of specific magnetic materials) 81.07.Pr (Organic-inorganic hybrid nanostructures)