TY - JOUR
T1 - Theoretical description of the high-frequency magnetic force microscopy technique
AU - Koblischka, Michael R.
AU - Hartmann, Uwe
PY - 2009/9
Y1 - 2009/9
N2 - 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.
AB - 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.
KW - Frequency characteristics
KW - Hard disk write head
KW - High-frequency measurement
KW - Magnetic force microscope
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U2 - 10.1109/TMAG.2009.2021985
DO - 10.1109/TMAG.2009.2021985
M3 - Article
AN - SCOPUS:69649091426
SN - 0018-9464
VL - 45
SP - 3228
EP - 3232
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 9
M1 - 5208492
ER -