Oblique Incidence Anisotropy in Ni-Fe Films Studied by Ferromagnetic Resonance

概要

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Oblique incidence anisotropy in Ni-Fe evaporated films are investigated as a function of the substrate temperature T_s is the range from 30 to 250℃. For the observation of the anisotropy, the magnetic resonance is utilized. For T_s<70℃, the axis of easy magnetization is directed nearly to the incidence direction; as increasing T_s, it turns to the film normal (83,90% Ni), or to the plane of film (75% Ni). The effective saturation magnetization M_s^* is about 0.6 of the bulk value, then increases as increasing T_s, and T_s>200℃, it is almost equal to the bulk value. From the results it is concluded that the anisotropy due to the columnar grain structure K_<col> is mainly responsible for T_s<70℃, but scarcely responsible for T_s>200℃. The anisotropy due to the magnetoelastic effect K_<magel> can be distinguished from K_<col>, and it is shown that K_<magel> is directly corresponds to the magnetostriction constant of the film.
社団法人日本物理学会の論文
1976-04-15