Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4936610
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- National Natural Science Foundation of China [51471077, 51371004, 11374043]
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Magnetostructural transition from ferromagnetic orthorhombic phase to paramagnetic hexagonal phase can be obtained by chemically alloying appropriate amount of Fe2Ge into MnNiSi. The magnetostructural transition temperature is tunable in a wide temperature range of about 280K. Saturation moment of the ferromagnetic orthorhombic phase increases from 2,62 /43/f.u. to 3,17 /.IB/f.u. with Fe-,Gc-doping. The magnctostructural transition is accompanied by a large change of magnetization over 80 Am-2/kg under magnetic field of 5 T. Relatively large magnetic entropy changes and working temperature ranges were observed in the vicinity of room temperature. Our findings suggest that MnNiSi-Fe2Ge material system is a promising platform for tunable magnetostructural transition and the associated magnctocaloric effect. (C) 2015 AIP Publishing LIE.
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