期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 608, 期 -, 页码 329-333出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.04.095
关键词
Ferromagnetic shape memory alloys; Phase transition; Magnetocaloric effects; Post annealing heat treatment
资金
- Council of Scientific and Industrial Research, India
We made a series of ferromagnetic shape memory alloys by large replacement of Sn in Ni2Mn1.36Sn0.64 system with Al to get good magnetocaloric effects. We studied this effect as a function of increase in amount of Al. While magnetocaloric property increased initially, it fell with higher contents of Al. To increase the effect at this Al concentration, we did secondary heat treatments at temperatures below the first annealing temperature. It was found that heat treatment can be used to tune the magnetism of the system, to obtain larger change in magnetization across the phase transformation, thus enhancing the functional capabilities of these alloys. (C) 2014 Elsevier B.V. All rights reserved.
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