Quantification of magnetic force microscopy images using combined electrostatic and magnetostatic imaging
Quantification of magnetic force microscopy images using combined electrostatic and magnetostatic imaging
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Date
1998-06-01
Authors
Gomez, R. D.
Pak, A. O.
Anderson, A. J.
Burke, E. R.
Leyendecker, A. J.
Mayergoyz, I. D.
Advisor
Citation
R.D. Gomez, A.O. Pak, A.J. Anderson, E.R. Burke, A.J. Leyendecker and I.D. Mayergoyz, "Quantification of magnetic force microscopy images using combined electrostatic and magnetostatic imaging", Journal of Applied Physics 83, 6226-6228 (1998)
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Abstract
A method for calibrating the force gradients and probe magnetic moment in phase-contrast magnetic
force microscopy ~MFM! is introduced. It is based upon the combined electrostatic force
microscopy EFM and MFM images of a conducting non magnetic metal strip. The behavior of the
phase contrast in EFM is analyzed and modeled as a finite area capacitor. This model is used in
conjunction with the imaging data to derive the proportionality constant between the phase and the
force gradient. This calibration is further used to relate the measured MFM images with the field
gradient from the same conducting strip to derive the effective magnetic moment of the probe. The
knowledge of the phase-force gradient proportionality constant and the probe’s effective moment is
essential to directly quantify field derivatives in MFM images.