MFM像の簡単な作図法による解釈  [in Japanese] A Simple Graphical Interpretation of MFM Images  [in Japanese]

It si generally difficult to interpret MFM images. Information about the magnetic structure of the apex is needed to define the origin of a detected magnetic force. Magnetic dipole interaction affecting the magnetic states of the tip and samples should be considered. In some case, however, a simple analytical method is valid. We propose a new graphical method for interpreting the MFM image contrast, which based on the interaction lines mapping around 90° and 180° domain walls. MFM images of a cross-tie wall can be explained by using the proposed methods. Gaphical drawings of the MFM images are compaed with experimental MFM images of patterned Ni_<80>Fe_<20> thin films taken with a Ni_<80>Fe_<20>-coated tip.