Abstract
Recently, higher areal recording density of HDD is achieved by increasing not only linear density (BPI) but also track density(TPI). Then, 3-D R/W simulation is necessary in order to design high-density recording system by utilizing magnetic field analysis. In this paper, 3-D R/W simulation system using edge-based finite element method is developed by introducting 3-D medium hysteresis model based on the ensemble of the Stoner-Wohlfarth (S-W) particles. As it is not easy to apply the Newton-Raphson method for the nonlinear analysis of S-W model, an under-relaxation iteration method is used. The formulation and an example of analysis are shown.
