Intermartensitic transformation and magnetic-field-induced strain in Ni52Mn24.5Ga23.5 single crystals

Citation
Wh. Wang et al., Intermartensitic transformation and magnetic-field-induced strain in Ni52Mn24.5Ga23.5 single crystals, APPL PHYS L, 79(8), 2001, pp. 1148-1150
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
8
Year of publication
2001
Pages
1148 - 1150
Database
ISI
SICI code
0003-6951(20010820)79:8<1148:ITAMSI>2.0.ZU;2-N
Abstract
We have found a complete thermoelastic intermartensitic transformation betw een modulated and unmodulated martensite in single-crystal Ni52Mn24.5Ga23.5 . This intermartensitic transformation provides a much larger strain than t hat of the martensitic transformation. A giant switching-like strain of +/- 5.0% can be achieved by a small magnetic field of 0.2 T upon the intermarte nsitic transformation. In the modulated martensite, a large recoverable mag netic-field-induced strain of up to 1.2% has been obtained. (C) 2001 Americ an Institute of Physics.