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Magnetization Reversal in CoPt Magnetooptic Recording Alloys

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Abstract

High resolution Kerr microscopy has been used to study newly developed Co25Pt75 alloy films with perpendicular magnetic anisotropy. In particular, the dynamics of magnetization reversal processes wase investigated by means of time resolved domain pattern analysis. Domain wall motion dominated magnetization reversal as well as nucleation dominated processes were observed. Magnetic aftereffect phenomena were confirmed by relaxation measurements of magnetic domains. The fractal dimension of the observed domains is correlated to the macroscopic coercivity determined from hysteresis loop measurements.

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Authors and Affiliations

  1. Universitat Duisburg, FB 10/ Angewandte Physik, Postfach 101503, D-4100, Duisburg, Germany

    T Kleinefeld, W.S Kim & J Valentin

  2. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA, 95120-6099, USA

    D Weller

Authors
  1. T Kleinefeld
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  2. W.S Kim
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  3. J Valentin
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  4. D Weller
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T, K., W.S, K., J, V. et al. Magnetization Reversal in CoPt Magnetooptic Recording Alloys. MRS Online Proceedings Library 313, 315–319 (1993). https://doi.org/10.1557/PROC-313-315

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  • DOI: https://doi.org/10.1557/PROC-313-315

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