Patent ID: 7551408
Filing Date: 2009-06-23
Classification: B82Y,G11B

Abstract:
1. A thin film magnetic head, comprising: a magneto-resistive effect element having a magneto-resistive effect film, wherein said magneto-resistive effect film is a multilayer film comprising wherein both end portions of said magneto-resistive effect film form a junction taper shape and, at said both end portions forming the junction taper shape, a pair of bias magnetic field applying layers are disposed via underlayers for applying a longitudinal bias magnetic field to said soft magnetic layer, said pinning layer does not extend beyond said end portions of said magneto-resistive effect film forming a junction taper shape, each of said underlayers is formed by a thin film made of at least one element selected from the group consisting of Ru, Zr, Hf, and Zn or an alloy thin film containing, as a main component, at least one element selected from said group, and each of said bias magnetic field applying layers formed on said underlayers is formed by a hard magnetic layer and has a thickness of 200 Å or less.