INTER-TRACK INTERFERENCE STUDIES USING MFM IMAGE-RECONSTRUCTION

The Magnetic Force Microscopy (MFM) image reconstruction technique has overcome difficulties in interpreting MFM images of data tracks writt en on longitudinal recording media. In this work, MFM image reconstruc tion is used to study the vector magnetization components of closely s paced tracks. Untrimmed and Focused-Ion Beam (FIB) milled, trimmed thi n-film inductive heads of widths 4.5 mu m and 2.5 mu m are used to wri te tracks with wavelengths ranging from 0.75 mu m to 3 mu m. In order to analyze the limitations of high density recording, the magnetizatio n at the edges of neighboring tracks is considered. It is shown that t he width of the cross-track component of magnetization is strongly dep endent on the relative phase difference of adjacent tracks, the track width, and the linear recording density.