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Principle of magnetic field analysis by MFM signal transformation and its application to magnetic recording media

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3 Author(s)
Saito, Hitoshi ; Dept. of Mater. Sci. & Eng., Akita Univ., Japan ; Jin Chen ; Ishio, S.

MFM signal transformation principle from MFM signals to magnetic fields at a sample surface was clarified by considering MFM tip Green's functions. The transformation principle was applied to MFM line profiles for perpendicular magnetic recording media. It was found that the tip-sample distance during MFM measurement could be roughly estimated and the commercial magnetic coated MFM tip behaved as a monopole tip by the transformation procedure. Using the above results, the magnetic field analysis at the sample surface was demonstrated by MFM signal transformation

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 5 )