Browse Prior Art Database

Thin Film Horizontal Head with Enhanced Write Characteristics for Magnetic Recording

IP.com Disclosure Number: IPCOM000116052D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Lee, HP: AUTHOR [+2]

Abstract

This invention incorporates a high moment magnetic layer in the pole/gap structure of horizontal, thin film magnetic recording heads such as inductive-write, inductive-read and inductive-write magnetoresistive read heads to enhance the write characteristics for high density magnetic recording applications (1,2).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Thin Film Horizontal Head with Enhanced Write Characteristics for
Magnetic Recording

      This invention incorporates a high moment magnetic layer in the
pole/gap structure of horizontal, thin film magnetic recording heads
such as inductive-write, inductive-read and inductive-write
magnetoresistive read heads to enhance the write characteristics for
high density magnetic recording applications (1,2).

      The pole structures of thin film heads are made with one or
more layers of high moment materials such as Co alloys or Fe alloys
and conventional NiFe to enhance the write characteristics without
degrading the read characteristics of the head.  The process involves
building a second, smaller pedestal on top of the existing pedestal.
The existing gap is built on top of this pedestal.  The high moment
material is deposited on the structure.  Standard NiFe is then plated
on top of the high moment material.  The high moment material is
exposed only at the two sides of the gap after lapping, as shown in
the Figure.
  References
  (1) U.S. Patent 4,949,207.
  (2) U.S. Patent 4,837,924.