Simulation of writing head in perpendicular magnetic recording system

Abstract

For perpendicular magnetic recording system, we suggest the modeling scheme combining finite element method and the fine field analysis. We did not use the Karlqvist head field but simulated a head field by the finite element method with precise simulation. For this purpose, we developed a Laplace program to calculate the head field at micromagnetic domains. We simulated the write process for a conventional head with a single layer perpendicular media and compared magnetic force microscopy images of simulated written bit patterns and tested patterns.