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The identification of the switching field distribution components

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2 Author(s)
E. D. Torre ; Inst. for Magnetic Res., George Washington Univ., Washington, DC, USA ; F. Vajda

A direct method for measuring the ratio of the interaction field distribution and the critical field distribution in a wide variety of longitudinal recording media is presented. The method requires only the measurement of mp, the normalized remanence of the sample at the conclusion of the magnetizing process Hsal, -hci , +hci, where Hsat is a field large enough to saturate it and hci is the operative remanence coercivity. In conjunction with major loop measurements, the method obtains both the standard deviation in the interaction field distribution and the standard deviation in the critical field distribution. Experimental verification of the proposed technique is presented

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IEEE Transactions on Magnetics  (Volume:31 ,  Issue: 5 )