Chinese Physics B, Volume. 29, Issue 10, (2020)
Table-like shape magnetocaloric effect and large refrigerant capacity in dual-phase HoNi/HoNi2 composite
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 (-ΔSMmax) 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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Dan Guo, Yikun Zhang, Yaming Wang, Jiang Wang, Zhongming Ren. Table-like shape magnetocaloric effect and large refrigerant capacity in dual-phase HoNi/HoNi2 composite[J]. Chinese Physics B, 2020, 29(10):
Received: Jun. 12, 2020
Accepted: --
Published Online: Apr. 21, 2021
The Author Email: Zhang Yikun (zmren@shu.edu.cn)