Abstract
A high efficiency main-pole-driven perpendicular magnetic recording head (MPD head) has been developed. The MPD head is one-sided with respect to a recording medium, and its driving coil is wound around a thin film main pole attached to a flux enhancing ferrite side core. The recording efficiency of the MPD head was improved by reducing the head dimensions such as the main pole jutting length from the side core end and the side core thickness, and also by employing a double layer recording medium. The achieved recording efficiency of the MPD head was higher than that of an auxiliary-pole-driven head with the almost same dimensions, and comparable to that of a conventional ring shaped head.
