Affiliations: [a] National Institute of Advanced Industrial Science and
Technology, AIST Tsukuba East, Tsukuba Ibaraki 305-8564, Japan | [b] University of Tsukuba, 1-1-1 Tennodai, Tsukuba
Ibaraki, 305-8573, Japan
Correspondence:
[*]
Corresponding author: Takayuki Suzuki, Advanced Manufacturing
Research Institute, National Institute of Advanced Industrial Science and
Technology, AIST Tsukuba East, Tsukuba Ibaraki 305-8564, Japan. E-mail:
suzuki-takayuki@aist.go.jp
Abstract: The forward and inverse analyses of MFM images were performed to
develop materials characterization technique using magnetic force microscopy.
By the forward analysis of artificial magnetic recording media, the MFM images
become focused with decreasing lift off height until 30 nm, both in a point
dipole magnetic tip and in a finite size (50 nm) magnetic tip. However, in the
case of the finite size magnetic tip, MFM images become degraded and especially
duplicated at magnetic phase boundaries below 30 nm lift off height. By the
inverse analysis of artificial magnetic recording media, the original magnetic
charge was fully reconstructed using deconvolution and inverse Fourier
transform techniques. By applying this technique to the experimental MFM image
for ferromagnetic shape memory alloy, clear and noiseless martensite of variant
structure was obtained from the MFM image.
Keywords: Magnetic force microscopy, forward analysis, inverse analysis, deconvolution, inverse Fourier transform, magnetic charge, ferromagnetic shape memory alloy, martensite
