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Chin. Phys. B, 2018, Vol. 27(2): 027501    DOI: 10.1088/1674-1056/27/2/027501
Special Issue: Virtual Special Topic — Magnetism and Magnetic Materials
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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. 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
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.

Keywords:  magnetocaloric effect      organic-inorganic hybrid      (CH3NH3)2CuCl4  
Received:  31 October 2017      Revised:  05 December 2017      Accepted manuscript online: 
PACS:  75.30.Sg (Magnetocaloric effect, magnetic cooling)  
  75.50.-y (Studies of specific magnetic materials)  
  81.07.Pr (Organic-inorganic hybrid nanostructures)  
Fund: 

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).

Corresponding Authors:  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

Cite this article: 

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) Magnetocaloric effect in the layered organic-inorganic hybrid (CH3NH3)2CuCl4 2018 Chin. Phys. B 27 027501

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