Patent ID: 6369992
Filing Date: 2002-04-09
Classification: B82Y,G11B

Abstract:
A magneto-resistance effect head comprising:a magnetic yoke having a major surface substantially forming a single plane and including a first magnetic yoke member, a second magnetic yoke member, and a magnetic gap, the gap being located between said first and second magnetic yoke members, and a medium facing surface substantially perpendicular to and adjacent to said major surface and including said first magnetic yoke member, said second magnetic yoke member, and said magnetic gap; a magneto-resistance effect film disposed on said major surface of said magnetic yoke, the magneto-resistance effect film being recessed a predetermined distance from said medium facing surface, and said major surface being substantially in parallel with a magnetic flow from said medium to, in order, said first magnetic yoke member, said magneto-resistance effect film, and said second magnetic yoke member; and a pair of leads giving a sense current to said magneto-resistance effect film, said magneto-resistance effect film overlapping said first and second yoke members with an overlap length large enough to permit most of a magnetic flux flowing in the head to be directed to the magneto-resistance effect film; and wherein the magnetic gap extends from the medium facing surface to the magneto-resistance effect film, and a width of the magnetic gap at the medium facing surface is substantially the same as a width of the magnetic gap at which the magneto-resistance effect film is disposed.