Thin-film magnetic head with heater for adjusting magnetic spacing

Abstract

A thin film magnetic head with higher protrusion efficiency, comprising: a substrate with an air bearing surface (ABS); a read head element including lower and upper shield layers, and a write head element including a pole layer; a heating element, which provided at a position opposite to the ABS with respect to the read head element and the write head element; and a heat dissipation element including a heat dissipation layer provided in the lower and upper shield layers and the magnetic pole layer In the vicinity of the opposite end of the ABS-side end of at least one layer, the heat dissipation element has a shape such that the pattern width along the track width direction of the ABS-side end is larger than that along the track width direction of the ABS-side end. The pattern width in the track width direction of the end portion opposite to the end portion on the ABS side.

Description

[0001] priority statement [0002] This application claims priority from Japanese Patent Application No. 2004-294760 filed on October 7, 2004, which is incorporated herein by reference. technical field [0003] The present invention relates to a thin-film magnetic head with a heater, a head gimbal assembly (HGA) with the thin-film magnetic head, and a disk drive with the HGA. Background technique [0004] In a magnetic disk drive apparatus, a thin-film magnetic head hydraulically flies a predetermined distance over a rotating magnetic disk when writing or reading a signal. While flying over the disk, the thin-film magnetic head writes a signal to the disk using a magnetic field generated from an inductive write head element, and reads a signal from the disk by the magnetoresistive (MR) effect read head element detecting the magnetic field corresponding to the signal. In these cases, the magnetic moment d MS is defined as the effective magnetic distance between the ends of ...

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