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Large magnetocaloric effect in rapidly quenched Mn 50- x Co x Ni 40 In 10 nanomaterials

Journal Article · · Journal of Physics. D, Applied Physics
The effect of Co addition on magnetic hysteresis, martensitic transformation temperature, and magnetic entropy change of rapidly-quenched Mn50-xCoxNi40In10alloy nanomaterials has been investigated. The melt-spun Mn50Ni40In10sample exhibits a small magnetic hysteresis which is further reduced by Co doping as measured between 0 and 2 T. The martensitic transformation temperature increases linearly with the electron concentration in the alloy from 195 K for Mn50Ni40In10to 378 K for Mn45Co5Ni40In10. The Mn47Co3Ni40In10alloy, which has phase-transition temperature close to room temperature, exhibits a substantial peak entropy change of 29.7 J kg-1K-1at magnetic field change of 2 T. Our results demonstrate that Mn47Co3Ni40In10nanomaterial exhibits promising magnetocaloric properties for near-room-temperature magnetic refrigeration.
Research Organization:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
FG02-04ER46152
OSTI ID:
1849541
Journal Information:
Journal of Physics. D, Applied Physics, Journal Name: Journal of Physics. D, Applied Physics Journal Issue: 17 Vol. 54; ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English

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