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An approach for researching uniaxial anisotropy magnet: Rotational magnetization

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5 Author(s)
Fan, Xiaolong ; The Key Lab for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, 730000, People’s Republic of China ; Xue, Desheng ; Jiang, Changjun ; Gong, Yu
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In this study, rotational magnetization curves are used to investigate the anisotropy and the rotational magnetization process of uniaxial magnets. We measured the projection of magnetization as a function of angle between the magnetic field and the reference axis. The information about anisotropy, such as the directions of the easy axis and hard axis, as well as the anisotropy field Hk(i), is acquired. Simultaneously, the rotational magnetization reversal processes are derived. The Co and Fe28Co61Zr11 magnetic thin films with induced in-plane uniaxial anisotropy have been researched. We found that the rotational magnetization reversal process of the Co film is a coherent rotation. However, the Fe28Co61Zr11 film shows the similar behavior, except for a noncoherent rotation appearing when a small field parallels the hard axis.

Published in:

Journal of Applied Physics  (Volume:102 ,  Issue: 12 )