Sensitivity analysis of write field with respect to design parameters for perpendicular recording heads

Abstract

In this article, an analytical solution for the write field distribution in perpendicular recording system is presented. The field distribution in soft underlayer has been taken into consideration. The computed results agree well with numerical simulations. To investigate the influence of the leading design parameters on the write field characteristics, the sensitivity analysis based on response surface methodology is carried out. Besides, the effect of the soft underlayer on the write field is also studied to provide guidelines for the perpendicular recording head design.