Investigation of the intermediate phase and magnetocaloric properties in high-pressure annealing Ni–Mn–Co–Sn alloy

Ma, S. C.; Xuan, H. C.; Zhang, C. L.; Wang, L. Y.; Cao, Q. Q.; Wang, D. H.; Du, Y. W.
August 2010
Applied Physics Letters;8/2/2010, Vol. 97 Issue 5, p052506
Academic Journal
The Ni–Mn–Co–Sn alloy is prepared by high-pressure annealing method. Besides the enhanced martensitic transformation temperature and the Curie temperature of austenite, an intermediate phase above the martensitic transformation is observed in this alloy. As a result, two successive magnetic entropy changes with the same sign are obtained around room-temperature, corresponding to the martensitic transformation and intermediate phase transition, respectively. The origin of the intermediate phase for high-pressure annealing Ni–Mn–Co–Sn alloy is discussed.


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