Journal
INTERMETALLICS
Volume 147, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2022.107595
Keywords
Magnetocaloric effect; Magnetic phase transition; Magnetic refrigeration
Categories
Funding
- National Natural Science Foundation of China [51971056]
- Fundamental Research Funds for the Central Universities [N2109005, N2209005]
- State Key Laboratory of Advanced Metals and Materials [2019-ZD07]
- State Key Laboratory for Mechanical Behavior of Materials [20202206]
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals [18LHPY014]
- Liaoning Revitalization Talent Program [XLYC1907175]
- Shenyang National Laboratory for Materials Science
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The crystal structure, magnetic phase transition, and magnetocaloric effect of R5CoSb2 (R = Pr, Nd, Gd-Er) alloys were investigated. The alloys undergo a ferromagnetic-paramagnetic transition under certain conditions and exhibit significant magnetocaloric effects near the phase transition temperature.
The crystal structure, magnetic phase transition and magnetocaloric effect in R5CoSb2 (R = Pr, Nd, Gd-Er) alloys are investigated. All alloys are crystallized in the Yb5Sb3-type orthorhombic structure. R5CoSb2 (R = Pr, Nd, Gd-Er) alloys undergo ferromagnetic (FM)-paramagnetic (PM) transition under 1 T. The magnetic phase transition of the R5CoSb2 (Gd-Er) alloys is of second-order nature, whereas the first-order phase transition takes place in the R5CoSb2 (R = Pr and Nd) alloys at a low temperature. For delta mu H-0 of 0-5 T, the values of the maximum of entropy change (the relative cooling power) are 6.4 J/kgK (97.8 J/kg), 2.2 J/kgK (108.7 J/kg), 7.5 J/kgK (592.5 J/kg), 5.2 J/kgK (400.4 J/kg), 6.2 J/kgK (413.5 J/kg), 9.0 J/kgK (423.0 J/kg) and 10.4 J/kgK (299.5 J/ kg) in R5CoSb2 (R = Pr, Nd, Gd-Er) alloys near the phase transition temperature.
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