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

doi:10.1088/1674-1056/27/2/027501

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

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