Analysis of Head to Medium Magnetic Interaction in Perpendicular Magnetic Recording by Finite Element Method Combined with Magnetization Model

A new simulation program has been developed for the analysis of perpendicular magnetic recording. This is the finite element method program which adopts a magnetization curling mode and a statistical method to calculate vectorial magnetizations in a medium. Using this simulation analysis, we could explain quantitatively the effects of the magnetic interaction between a single-pole head and a double-layer medium which were predicted from the experimental results. Furthermore, we were able to analyze a vectorial recording and reproducing mechanism. This new program is a very powerful tool which can more precisely simulate the magnetic recording process.