Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field

A. Sozinov, Y. Ezer, G. Kimmel, P. Yakovenko, D. Giller, Y. Wolfus, Y. Yeshurun, K. Ullakko, V. K. Lindroos

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12 Scopus citations


A single-crystal samples of near-stoichiometric Ni2MnGa alloys with large magnetic field induced strain (MSM effect) at room temperature have been investigated. It was found that there is a reversible reorientation of easy magnetization direction and magnetic domain structure under applied magnetic field. By means of x-ray Laue diffraction method and difractometric analysis it was ascertained that these phenomena are connected with the growth of martensitic twin variant with the short crystallographic axis (c-axis) directed along the applied magnetic field. Furthermore, by means magneto-optical investigations we have found the correlation between martensitic microstructure and magnetic domain structure. The field-induced reorientation of martensite was able to change the dimensional lengths of the samples more than 4.5%.

Original languageEnglish
Pages (from-to)Pr8311-Pr8316
JournalJournal De Physique. IV : JP
Issue number8
StatePublished - Nov 2001
Externally publishedYes
Event5th European Symposium on Martensitic Transformations and Shape Memory Alloys ESOMAT'2000 - Villa Olmo, Como, Italy
Duration: 4 Sep 20008 Sep 2000


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