Abstract
The homogeneity of magnetic anisotropy of a GdTbFe magneto-optical disk film prepared by rf-sputtering method was investigated by measurement of the oblique Hall effect. Hall samples were cut from the disk along its radius in a size of 7 mm × 7 mm. The magnetic field H was applied obliquely to each sample, and the dependences of the Hall loop upon the azimuthal angle γ and the inclination angle α of the field H were studied in detail.The experimental results showed that the disk film is of an oblique magnetic anisotropy in which the in-plane magnetic easy axes lie radially from the center of the disk. It was also found that the inclination angle of the magnetization measured from the film normal increases continuously from the inner side toward the outer side along the radius of the disk.
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