| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co1-xCuxCr2S4 |
| Xiao-Chao Zheng(郑小超)1,2, Xi-Yang Li(李西阳)2, Lun-Hua He(何伦华)2,3, Shao-Ying Zhang(张绍英)2,3, Ming-Hua Tang(唐明华)4, Fang-Wei Wang(王芳卫)2,3 |
1 School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China;
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China;
4 Key Laboratory of Key Film Materials and Application for Equipments(Hunan Province), School of Material Sciences and Engineering, Xiangtan University, Xiangtan 411105, China |
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Abstract Crystallographic structure, magnetic properties, and magnetic entropy change of the Cr-based spinel sulfides Co1-xCuxCr2S4 (x=0-0.8) have been investigated. All these compounds crystallize into the cubic spinel structure, the Cu substitution shrinks linearly the lattice constant at a ratio of 0.0223 Å per Cu atom in the unit cell, and enhances linearly the Curie temperature and the spontaneous magnetization at the rates of 18 K and 0.33 μB/f.u. per Cu atom in the unit cell, respectively. All these compounds show a typical behavior of second order magnetic transition, and a room temperature magnetic entropy change of 2.57 J/kg·K is achieved for Co0.4Cu0.6Cr2S4.
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Received: 12 January 2017
Revised: 23 January 2017
Accepted manuscript online:
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PACS:
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75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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75.50.-y
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(Studies of specific magnetic materials)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274369, 51472210, and 11675255). |
Corresponding Authors:
Fang-Wei Wang, Ming-Hua Tang
E-mail: fwwang@iphy.ac.cn;mhtang@xtu.edu.cn
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Cite this article:
Xiao-Chao Zheng(郑小超), Xi-Yang Li(李西阳), Lun-Hua He(何伦华), Shao-Ying Zhang(张绍英), Ming-Hua Tang(唐明华), Fang-Wei Wang(王芳卫) Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co1-xCuxCr2S4 2017 Chin. Phys. B 26 037502
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