期刊
SCRIPTA MATERIALIA
卷 89, 期 -, 页码 33-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2014.06.027
关键词
Heusler alloy; Ferromagnetic shape memory; Martensitic phase transformation; Magnetic structure; First-principles calculation
类别
资金
- National Natural Science Foundation of China [51221163, 51371017]
- National 973 program of China [2012C13619403]
The martensitic phase transformation temperatures in the Ni-Mn-Sn Heusler alloys increase with the number of valence electrons per atom; however, when Mn atoms are substituted by Fe, Co or Cu atoms, the systems show anomalous behaviors. In addition, large magnetization changes are observed in these alloys. To understand the unusual properties, the phase transitions in Ni-Mn(Z)-Sn (Z = 3d transition metals) are studied using first-principles calculations. It is found that the changes in the magnetic configuration are responsible for the unusual properties observed. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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