Spin reorientation in premartensite and austenite Ni–Mn–Ga
Alexej Perevertov,
Ross H. Colman,
Oleg Heczko
Abstract:The premartensite state of Ni–Mn–Ga magnetic shape memory alloy, sometimes called the martensite precursor state, was studied by careful and detailed measurement of the evolution of magnetization curves of magnetically closed samples to evidence local symmetry breaking. During the heating cycle after the martensite transformation, the magnetization loop slowly transforms from a typical sigmoidal shape, corresponding to the magnetization along the easy axis, to a constricted loop indicative of magnetization alo… Show more
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