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《中国物理快报：英文版》
>Magnetocrystalline Anisotropy and Magnetoelasticity of Preferentially Oriented Martensitic Variants in Ni52Mn24Ga24 Single Crystals
Magnetocrystalline Anisotropy and Magnetoelasticity of Preferentially Oriented Martensitic Variants in Ni52Mn24Ga24 Single Crystals
The magnetocrystalline anisotropy and magnetoelasticity of preferentially oriented martensitic variants in an off-stoichiometric Ni52Mn24Ga24 single crystal have been investigated.We found that the easy magnetization direction of the martensite phase in the [110] direction,and the hard magnetization exhibited in [001],the growth direction of single crystals.The temperature dependence of the anisotropy fields and constants of Ni52Mn24Ga24 have been determined.It was found that,at the martensite phase,the anisotropy field increases monotonically with decreasing temperature,but the anisotropy constant first increases rapidly and then the increasing rate becomes smaller and smaller.Based on a previous model,the present results suggest that the competition between the Zeeman energy and the magnetocrystalline anisotropy energy is mainly responsible for the magnitude of magnetic-field-induced strain in this material.
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