Two-dimensional analysis of magnetic microstructures in the DC-demagnetized state and magnetization fluctuations in the transition region using MFM images

This study analyzed the directional dependence of magnetic microstructures of media by focusing on the distribution of magnetic poles. Media, whose magnetic poles tend to be distributed along a specific direction in the DC-demagnetized state, have larger magnetization fluctuations in the transition region, larger medium noise and higher partial erasure (PE) probability than media with uniform magnetic pole distribution.