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Magnetization Reversal in CoPt Magnetooptic Recording Alloys

Published online by Cambridge University Press:  03 September 2012

T. Kleinefeld ,
W.S. Kim ,
J. Valentin  and
D. Weller
T. Kleinefeld
Affiliation:
Universität Duisburg, FB 10/ Angewandte Physik, Postfach 101503, D-4100 Duisburg, Germany
W.S. Kim
Affiliation:
Universität Duisburg, FB 10/ Angewandte Physik, Postfach 101503, D-4100 Duisburg, Germany
J. Valentin
Affiliation:
Universität Duisburg, FB 10/ Angewandte Physik, Postfach 101503, D-4100 Duisburg, Germany
D. Weller
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120–6099, USA
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 315
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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