Co-Cr垂直磁化膜の異常ホール効果測定と磁気特性の評価  [in Japanese] Measurement of the Anomalous Hall Effect and Evaluation of the Magnetization Characteristics of Co-Cr Perpendicular Magnetic Thin Films  [in Japanese]

The Magnetization characteristics of Co-Cr thin films deposited by facing-targets sputtering were studied by observation of the anomalous Hall effect. The induced Hall voltage became larger with decreasing film thickness and reached a maximum value when the magnetic field was applied perpendicular to the film plane. From the results, it was found that Co-Cr film, with a sufficiently small c-axis dispersion angle, could be magnetized easily in a direction to its plane regardless of the angle of the applied field. The shapes of the normalized Hall loop for 80 Å and 150 Å thick films were compared with the shapes of the loops observed by both VSM and the Kerr loop tracer method. The results suggest that the magnetic characteristics of the Co-Cr film could be detected even the thickness below 100 Å.