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Effect of apparent reversibility on parameter estimation [magnetic recording]

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2 Author(s)
E. Della Torre ; Sch. of Eng. & Appl. Sci., George Washington Univ., Washington, DC, USA ; F. Vajda

In materials with large magnetic moments, the interaction field can be sufficiently large so that the Preisach function has a significant contribution outside the fourth quadrant of the Preisach plane. It is shown that such media, even a perfectly aligned medium that has an apparent reversible component, will have nonzero squareness. In this case, one has to distinguish between remanence and the irreversible component of the magnetization. Since measurements cannot distinguish between the two effects, the procedure for the identification of model parameters must model the effects and use their different properties in order to separate them. This paper discusses such an identification procedure

Published in:

IEEE Transactions on Magnetics  (Volume:33 ,  Issue: 2 )