Journal
ADVANCED ENGINEERING MATERIALS
Volume 25, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.202201770
Keywords
high-entropy alloys; large refrigerant capacity; magnetic-phase diagram; magnetic properties; table-like magnetocaloric effect
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The complex magnetic transition, magnetocaloric effect, refrigerant capacity, and magnetic-phase diagram of single-phase TbDyHoEr high-entropy alloy were investigated. Results showed that the melt-spun treatment significantly improved the refrigerant capacity of TbDyHoEr from 883.19 to 1049.22 J kg(-1) due to complex magnetic transition and ideal table-like magnetocaloric effect. The improved application potential of TbDyHoEr as a high-efficient magnetic refrigeration material and the ideal table-like magnetocaloric effect in a large temperature range enable this material to meet the requirements of cryogenic and mesothermal refrigeration for an Ericsson cycle.
Rare-earth-based high-entropy alloys (HEAs) with large magnetocaloric effect (MCE) have been recently recognized as good candidates for magnetic refrigeration. Herein, the complex magnetic transition, MCE, refrigerant capacity (RC), and magnetic-phase diagram of single-phase TbDyHoEr HEA are studied. It is showed in the results that due to complex magnetic transition and an ideal table-like MCE, the RC of TbDyHoEr is significantly improved from 883.19 to 1049.22 J kg(-1) by melt-spun treatment. In terms of RC value and hysteresis performance, the melt-spun treatment significantly improves the application potential of TbDyHoEr HEA as a high-efficient magnetic refrigeration material, and the ideal table-like MCE in a large temperature range enables this material to meet the requirements of both cryogenic refrigeration and mesothermal refrigeration for an Ericsson cycle.
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