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Magnetic-Field-Induced Stresses and Magnetostrain Effect in Martensite
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Victor L’vov1), Sergey Zagorodnyuk1), Vladimir Chernenko2) and Toshiyuki Takagi3)
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1) Department of Radiophysics, Taras Shevchenko University
2) Institute of Magnetism
3) Institute of Fluid Science, Tohoku University
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An equivalence principle for mechanical and magnetoelastic stresses is used for the quantitative theoretical description of giant magnetostrain effect in ferromagnetic martensite. Field-induced strains are computed in the framework of phenomenological magnetoelastic model for two different orientations of magnetic field with respect to the crystal axes. Good agreement between the theoretical and experimental field dependencies of the strains in Ni–Mn–Ga alloys is achieved.
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Keyword: ferromagnetic martensite, giant magnetostrain effect, theoretical description, Ni2MnGa
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Received: October 01, 2001
Accepted: April 15, 2002 ,
Published online: September 06, 2005 |
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Copyright (c) 2005 The Japan Institute of Metals |
 Reference
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