Magnetocaloric effect in the layered organic–inorganic hybrid(CH_3NH_3)_2CuCl_4 |
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引用本文: | 马怡妮娜,翟昆,闫丽琴,柴一晟,尚大山,孙阳.Magnetocaloric effect in the layered organic–inorganic hybrid(CH_3NH_3)_2CuCl_4[J].中国物理 B,2018(2). |
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作者姓名: | 马怡妮娜 翟昆 闫丽琴 柴一晟 尚大山 孙阳 |
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摘 要: | We present a study of magnetocaloric effect of the quasi-two-dimensional(2D) ferromagnet(CH_3NH_3)_2CuCl_4 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.
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