Evaluation of magnetization processes of double layered recording media for perpendicular magnetic recording using ferromagnetic hall effect

摘要

Magnetization processes of recording layer and soft magnetic back layer in double layered perpendicular magnetic recording media can be divided and evaluated ferromagnetic Hall effect. Anomalous Hall effect and planar Hall effect in double layered film can be evaluated taking into account of the symmetry of those characteristics for the applied magnetic field. Magnetization component of anomalous Hall effect that has a point symmetry is only detected in Co-Cr-Ta single layer. Magnetization component of planar Hall effect that has a symmetric with respect to the vertical axis is simultaneously detected with a component of anomalous Hall effect in Ni-Fe single layer.