Electrical & Computer Engineering Research Works

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Subject: search.filters.subject.magnetic force microscopy (MFM)

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    Spin-stand imaging of overwritten data and its comparison with magnetic force microscopy
    (American Institute of Physics, 2001-06-01) Mayergoyz, I. D.; Tse, C.; Krafft, C.; Gomez, R. D.
    A new technique of magnetic imaging on a spin-stand [Mayergoyz et al., J. Appl. Phys. 87, 6824 (2000)] is further developed and extensively tested. The results of successful imaging of digital patterns overwritten with misregistration ranging from 0.3 to 0.07 mm are reported. The results are compared with magnetic force microscopy (MFM) images and the conclusion is reached that the spin-stand imaging technique can provide (at least) the same level of resolution and accuracy as the MFM imaging technique.
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    Domain configurations of Permalloy elements
    (American Institute of Physics, 1999-04-15) Gomez, R. D.; Luu, T. V.; Pak, A. O.; Kirk, K. J.; Chapman, J. N.
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    Quantification of magnetic force microscopy images using combined electrostatic and magnetostatic imaging
    (American Institute of Physics, 1998-06-01) Gomez, R. D.; Pak, A. O.; Anderson, A. J.; Burke, E. R.; Leyendecker, A. J.; Mayergoyz, I. D.
    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.