US 11,900,971 B1 · Magnetic recording head with assisting electric current in trailing shield

Abstract

The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.

Claims19

Dependent claims

A magnetic recording head, comprising:

a main pole;
a first side shield disposed adjacent to a first surface of the main pole;
a second side shield disposed adjacent to a second surface of the main pole opposite the first surface;
a low resistance layer disposed over a third surface of the main pole;
a trailing shield disposed over the first side shield, the second side shield, and the low resistance layer, the low resistance layer being in contact with one or more layers that is disposed in contact with at least a portion of the trailing shield, such that a conductive path is formed from the trailing shield to the low resistance layer;
a first insulation layer disposed over the low resistance layer, wherein at least a portion of the first insulation layer divides the trailing shield into two or more portions;
and
a second insulation layer comprising a first portion disposed between the first side shield and the trailing shield, and a second portion disposed between the second side shield and the trailing shield.

5 more elements

Dependencies are inferred from the claim text.

Magnetic recording head with assisting electric current in trailing shield

Life of this patent

Magnetic recording head with assisting electric current in trailing shield

Life of this patent

Abstract

Claims19