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Temperature dependence of the field-induced phase transformation in Ni50Mn37Sn13

TitleTemperature dependence of the field-induced phase transformation in Ni50Mn37Sn13
Publication TypeJournal Article
Year of Publication2008
AuthorsSchlagel DL, Yuhasz WM, Dennis KW, McCallum RW, Lograsso TA
Journal TitleScripta Materialia
Volume59
Pages1083-1086
Date Published11/01
Type of ArticleArticle
ISBN Number1359-6462
Accession NumberISI:000259885800015
Keywordsalloys, Field-induced, Heusler phase, Magnetic shape memory alloy, Martensitic, Ni-Mn-Sn alloy, phase transformation
Abstract

Polycrystalline Ni50Mn37Sn13 alloy was fully homogenized such that the structural and magnetic transitions were clearly separated from each other in temperature. The sequence of transitions on cooling is: (1) austenite Curie point; (2) austenite to martensite structural and coupled ferromagnetic to paramagnetic transitions (first-order); and (3) martensite Curie point. Most notably, we found the field-induced transformation occurs from paramagnetic martensite to ferromagnetic austenite. The field-induced transition has a temperature dependence of -10 kOe K-1 over a narrow temperature range. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
DOI10.1016/j.scriptamat.2008.07.039
Alternate JournalScr. Mater.