The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1998
Filed:
Oct. 07, 1996
TDK Corporation, Tokyo, JP;
Abstract
A method of manufacturing a magnetic head apparatus with a magnetoresistive head utilizing the spin valve effect includes a final heat treatment step (S14) of heating the multi-layered spin valve structure (15) with application of a magnetic field in a direction perpendicular to a track width direction of the spin valve magnetoresistive head so that a thin film layer of soft ferromagnetic material (3, 5) to be pinned by a thin film layer of antiferromagnetic material (6) has a uniaxial anisotropy. This final heat treatment step (S14) is executed after all the steps (S1, S3, S5, S7, S8, S9, S11) each of which includes a heat treatment stage executed at a temperature which will vary a uniaxial anisotropy of the pinned thin film layer of soft ferromagnetic material (3,5) are completed.