CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Table-like shape magnetocaloric effect and large refrigerant capacity in dual-phase HoNi/HoNi2 composite |
Dan Guo(郭丹), Yikun Zhang(张义坤)†, Yaming Wang(王雅鸣), Jiang Wang(王江), and Zhongming Ren(任忠鸣)‡ |
1 State Key Laboratory of Advanced Special Steels & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China |
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Abstract Nowadays, magnetic cooling (MC) technology by using the magnetocaloric effect (MCE) has attracted extensive research interest for its promising practical applications. A constant large/giant MCE covers wide refrigeration temperatures (denote as table-like shape) is beneficial for obtaining high efficiency performance for MC. In this paper, the HoNi/HoNi2 composite was successfully synthesized by arc-melting method and proved to be composed of HoNi and HoNi2 crystalline phases with weight ratios of 52.4 wt.% and 47.6 wt.%, respectively. The maximum magnetic entropy change ($ -{\rm{\Delta }}{S}_{M}^{{\rm{\max }}} $ ) is 18.23 J/(kg⋅K), and the refrigerant capacity values RC1, RC2, and RC3 are 867.9 J/kg, 676.4 J/kg, and 467.8 J/kg with ΔH = 0–70 kOe, respectively. The table-like shape MCE and large refrigerant capacity values make the composite attractive for cryogenic MC using the Ericsson cycle.
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Received: 12 June 2020
Revised: 11 July 2020
Accepted manuscript online: 28 July 2020
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PACS:
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71.20.Eh
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(Rare earth metals and alloys)
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75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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75.30.Cr
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(Saturation moments and magnetic susceptibilities)
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Corresponding Authors:
†Corresponding author. E-mail: ykzhang@shu.edu.cn ‡Corresponding author. E-mail: zmren@shu.edu.cn
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About author: †Corresponding author. E-mail: ykzhang@shu.edu.cn ‡Corresponding author. E-mail: zmren@shu.edu.cn * Project supported by the National Natural Science Foundation of China (Grant No. 51690162), Science and Technology Committee of Shanghai, China (Grant No. 19ZR1418300), Independent Research and Development Project of State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University (Grant No. SKLASS 2019-Z003), and the Science and Technology Commission of Shanghai Municipality, China (Grant No. 19DZ2270200). |
Cite this article:
Dan Guo(郭丹), Yikun Zhang(张义坤)†, Yaming Wang(王雅鸣), Jiang Wang(王江), and Zhongming Ren(任忠鸣)‡ Table-like shape magnetocaloric effect and large refrigerant capacity in dual-phase HoNi/HoNi2 composite 2020 Chin. Phys. B 29 107502
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