Chin. Phys. Lett.  2002, Vol. 19 Issue (4): 591-594    DOI:
Original Articles |
Magnetocrystalline Anisotropy and Magnetoelasticity of Preferentially Oriented Martensitic Variants in Ni52Mn24Ga24 Single Crystals
QU Jing-Ping1,2;WANG Wen-Hong2;MENG Fan-Bin1;LIU Bao-Dan1,2;LIU Zhu-Hong2;CHEN Jing-Lan2;LI Yang-Xian1;WU Guang-Heng2
1Center of Magnetic Materials and Magnetic Technology, Hebei University of Technology, Tianjin 300130 2State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
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QU Jing-Ping, WANG Wen-Hong, MENG Fan-Bin et al  2002 Chin. Phys. Lett. 19 591-594
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Abstract The magnetocrystalline anisotropy and magnetoelasticity of preferentially oriented martensitic variants in an off-stoichiometric Ni52Mn24Ga24 single crystal were investigated. We found that the easy magnetization direction of the martensite phase is 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 martensite phase, the anisotropy field increases monotonically with decreasing temperature, but the anisotropy constant first increases rapidly and then the increasing rate become smaller and smaller. Based on a previous model, 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.
Keywords: 81.30.Kf      75.20.En      64.70.Kb     
Published: 01 April 2002
PACS:  81.30.Kf (Martensitic transformations)  
  75.20.En (Metals and alloys)  
  64.70.Kb  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2002/V19/I4/0591
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QU Jing-Ping
WANG Wen-Hong
MENG Fan-Bin
LIU Bao-Dan
LIU Zhu-Hong
CHEN Jing-Lan
LI Yang-Xian
WU Guang-Heng
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