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Crystal structures and magnetic anisotropy properties of Ni-Mn-Ga martensitic phases with giant magnetic-field-induced strain

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3 Author(s)
A. Sozinov ; Lab. of Phys. Metall. & Mater. Sci., Helsinki Univ. of Technol., Finland ; A. A. Likhachev ; K. Ullakko

Several kinds of martensitic phases have been found in nonstoichiometric Ni2MnGa alloys in numerous recent studies. The structural, magnetic, and mechanical properties important for a giant magnetic-field-induced strain response in these alloys are presented. Depending on the martensite crystal structure Ni-Mn-Ga alloys are able to show a really giant (about 6% or 10%) strain response in a magnetic field less than 1 T.

Published in:

IEEE Transactions on Magnetics  (Volume:38 ,  Issue: 5 )