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
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

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.

Alternate JournalScr. Mater.