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Theoretical Description of the High-Frequency Magnetic Force Microscopy Technique

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2 Author(s)
Koblischka, M.R. ; Inst. of Exp. Phys., Saarland Univ., Saarbrucken, Germany ; Hartmann, U.

We present a theoretical description of the high-frequency magnetic force microscopy (HF-MFM) technique. There are currently two operation modes: 1) the measurement of high-frequency currents via their magnetic stray fields and 2) the measurement of stray fields emanating from hard disk writer poles. The advanced HF-MFM technique employs the amplitude-modulation technique in order to convert the HF signal to the frequency range of the cantilever. Using the point-dipole approximation, we calculate the resulting force onto the cantilever for both cases.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 9 )