異常Hall効果を用いた垂直記録媒体の磁化過程観測

概要

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It is very useful to evaluate the magnetization vector in extremely thin films by combining the results determined by Hall voltage measurement and those observed by the conventional VSM method. Major and minor loops of a 30-nm-thick Co-Cr-Ta single layer implied that a magnetization reversal occurs mainly in the in-plane direction at a relatively low magnetic field. On the other hand, a 30-nm-thick Co-Cr-Ta film deposited on a (111) plane-oriented Pt under layer revealed a more definite c-axis orientation than the Co-Cr-Ta single layer. Magnetization reversal of Co-Cr-Ta/Pt film occurs mainly in a direction perpendicular to the film, in spite of its large perpendicular anisotropy.
社団法人日本磁気学会の論文
2001-04-15