US 2013/0075359 A1 · Perpendicular Magnetic Recording Head and Method of Manufacturing the Same

Abstract

Provided are a perpendicular magnetic recording head and a method of manufacturing the same. The perpendicular magnetic recording head includes a main pole including a pole tip applying a recording magnetic field to a recording medium, a coil surrounding the main pole in a solenoid shape such that recording magnetic field for recording information to a recording medium is generated at the pole tip, and a return yoke forming a magnetic path for the recording magnetic field together with the main pole and surrounding a portion of the coil passing above the main pole. The number of times that the coil passes above the main pole is smaller than the number of times that the coil passes below the main pole.

Claims20

Dependent claims

A method, comprising:

forming a lower coil layer, a main pole, and a first insulation layer;
forming an upper coil layer on the first insulation layer;
forming a pole tip at an end of the main pole by etching the first insulation layer and the main pole using the upper coil layer as an etch mask, the pole becoming thinner toward the pole tip;
forming a second insulation layer over the upper coil layer and the pole tip;
and
forming a return yoke over the second insulation layer, the return yoke surrounding the upper coil layer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/682,175Filed 20 Nov 2012

Priority

KR 10-2007-01131887 Nov 2007

Published

28 Mar 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G11B 5/33
Structure or manufacture of heads, e.g. inductive: structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of…
G11B 5/1278
Structure or manufacture of heads, e.g. inductive: specially adapted for magnetisations perpendicular to the surface of the record carrier
G11B 5/17
Structure or manufacture of heads, e.g. inductive: construction or disposition of windings
G11B 5/3116
Details: shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect,…

Perpendicular Magnetic Recording Head and Method of Manufacturing the Same

Life of this patent

Perpendicular Magnetic Recording Head and Method of Manufacturing the Same

Life of this patent

Abstract

Claims20