Back to results
US 2006/0139815 A1Published application
Thin film magnetic head
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsSyuji Nishida, Yasutaka Nishida, Ikuya Tagawa
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention avoid loss of information as recorded, due to an external magnetic field applied. In one embodiment, a pole expanded part prone to occurrence of magnetic saturation is formed so as to prevent magnetic fluxes from being converged at ends of a return pole of a magnetic head.
Claims20
A magnetic head comprising:
- a read head having a magneto-resistive element sandwiched between a first soft magnetic shield, and a second soft magnetic shield;
- and
- a perpendicular magnetic write head having a return pole and a main pole,
- wherein at least one of the return pole, the first soft magnetic shield, and the second soft magnetic shield has a tapered shape with a cross-sectional area thereof, normal to a cross-track direction, decreasing from a center of the head outwardly in the cross-track direction.
1 more element
A magnetic recording system comprising:
- a magnetic head having a read head having a magneto-resistive element sandwiched between a first soft magnetic shield, and a second soft magnetic shield, and a perpendicular magnetic write head having a return pole and a main pole;
- a substrate;
- a perpendicular magnetic recording layer formed over the substrate;
- and
- a perpendicular magnetic recording medium having a soft magnetic layer formed between the substrate and the perpendicular magnetic recording layer,
- wherein at least one of the return pole, the first soft magnetic shield, and the second soft magnetic shield has a tapered shape with a cross-sectional area thereof, normal to a cross-track direction, decreasing from a center of the head outwardly in the cross-track direction.
3 more elements
A magnetic head comprising:
- a read head having a magneto-resistive element sandwiched between a first soft magnetic shield, and a second soft magnetic shield;
- and
- a perpendicular magnetic write head having a return pole and a main pole,
- wherein at least one of the return pole, the first soft magnetic shield, and the second soft magnetic shield has a tapered shape with a cross-sectional area thereof, normal to a cross-track direction, decreasing from a center of the head outwardly in the cross-track direction;
- and
- wherein at least one of the return pole, the first soft magnetic shield, and the second soft magnetic shield has a center part, to each of both ends, in the cross-track direction, of which an addition part substantially triangular or trapezoidal in shape, is connected.
3 more elements
Dependencies are inferred from the claim text.