Measurements of the anisotropy in permalloy

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Eijkel, Kees J. (1988) Measurements of the anisotropy in permalloy. IEEE transactions on Magnetics, 24 (2, par). pp. 1957-1959. ISSN 0018-9464

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Abstract:A measurement system is described, which accurately determines the anisotropy field H/sub k/ and the orientation of the easy-axis in a permalloy film or in any material showing magnetization induced resistance anisotropy. An accuracy of 0.1% in H/sub k/ and 0.1 degrees in easy-axis orientation is reached in permalloy when the applied field strength is 2.5 H/sub k/. Deviations from the Stoner-Wohlfarth single domain model can be recognized after the analysis of the measurement. Four electrical contacts have to be positioned on the permalloy in a planar-Hall configuration. Aluminum contacts realized by a standard lithographic process are used, providing a reference for the easy-axis orientation and an accurate relative orientation of the different planar-Hall elements that can be made out of a single film.
Item Type:Article
Copyright:©1988 IEEE
Link to this item:http://purl.utwente.nl/publications/55643
Official URL:http://dx.doi.org/10.1109/20.11658
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