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Rotational Model of Flux Reversal in Square Loop Ferrites

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1 Author(s)
Gyorgy, E.M. ; Bell Telephone Laboratories, Inc., Murray Hill, New Jersey

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1722897 

The present paper analyzes a rotational model of flux reversal in ferromagnetic materials. A brief review of the experimentally established details of the flux reversal process in square loop ferrites is given. The discrepancies between the experimental results and the predictions of the domain wall motion theory are discussed. The switching coefficient Sw is examined in detail. The rotational model is based on the solution of the modified Landau and Lifshitz equation and predicts the shape of the output voltage pulse, the relationship between the flux reversal time and the applied field, and the minimum switching coefficient that can be obtained for a given ferrite. The switching coefficients determined experimentally are within a factor of three of the minimum value of Sw predicted by this model.

Published in:

Journal of Applied Physics  (Volume:28 ,  Issue: 9 )

Date of Publication:

Sep 1957

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