Magneto-resistive effect thin-film magnetic head
AssigneeSony Corporation
InventorsNobuhiro Sugawara, Hideo Suyama, Akio Takada
Life of this patent
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Abstract
A magneto-resistive effect thin-film magnetic head including a magnetic layer exhibiting a magneto-resistive effect, the magnetic layer having a longitudinal axis and two ends positioned at opposite ends of the longitudinal axis, and a flux guide layer of a high magnetic permeability soft magnetic material formed at an overlapping one end of the magnetic layer, the flux guide layer having two opposite ends longitudinally aligned with the longitudinal axis of the magnetic layer. On overlapping both ends of the flux guide layer, there are formed separate hard fills operating as permanent magnets.
Claims8
A magneto-resistive effect a-fill magnetic head comprising:
- a magnetic layer exhibiting a magneto-resistive effect, said magnetic layer having a longitudinal axis and two ends positioned at opposite ends of the longitudinal axis;
- and
- a flux guide layer of a high magnetic permeability soft magnetic material formed at and overlapping one end of the magnetic layer, said flux guide layer having two opposite ends longitudinally aligned with the longitudinal axis of the magnetic layer;
- wherein the improvement comprises
- separate hard fills operating as permanent magnets formed on .and overlapping both ends of the flux guide layer.
Dependencies are inferred from the claim text.