Efficiency and inductance analysis of a three-region thin-film head

Expressions for the efficiency and inductance of a thin-film magnetic head are derived using an extended transmission-line model. This extension was performed by applying the Paton-Jones unidimensional model to an actual head geometry, with three regions in the longitudinal cross section: a pole tip region, a coil region, and a back protection region. The computer analysis of the efficiency and inductance is used to predict geometry optimization of the head.