In this work an evaluation tool for the characterization of high-density recording thin film media is discussed. The measurement principles are based on the anomalous and the planar Hall effect. We used these Hall effects to characterize ferromagnetic Co-Cr films and Co/Pd multilayers having perpendicular anisotropy. The measurements set-up that was built has a sensitivity capable of measuring the hysteresis loops of 0.2x0.2 mm2 Hall structures in Co-Cr and jumps were observed in the Hall voltage as a function of the applied field. Easy-axis measurements have been carried out, but the results are not in complete agreement with conventional techniques. A thickness series of Co/Pd multilayers has been characterized with the planar Hall effect and the magnetoresistance ratio.
|Number of pages||6|
|Journal||Journal of the Magnetics Society of Japan|
|Publication status||Published - 1991|
- SMI-TST: From 2006 in EWI-TST
- SMI-MAT: MATERIALS
de Haan, S., de Haan, S., Lodder, J. C., & Popma, T. J. A. (1991). The (Anomalous) Hall Magnetometer as an Analysis Tool for High Density Recording Media. Journal of the Magnetics Society of Japan, 15(S2), 349-354.