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:
Apr. 02, 2002
Filed:
Nov. 05, 1999
Keiichi Nagasaka, Kawasaki, JP;
Yutaka Shimizu, Kawasaki, JP;
Hitoshi Kishi, Kawasaki, JP;
Atsushi Tanaka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A method is disclosed for magnetizing a magnetic system including a ferromagnetic layer magnetized in a first direction and an anti-ferromagnetic layer provided on said ferromagnetic layer in exchange coupling therewith. The method includes a first thermal annealing process including the sub-steps of annealing the magnetic system in a first annealing state, and applying a magnetic field to the magnetic system in a second direction different from the first direction, while maintaining the magnetic system in the first annealing state. A second thermal annealing process includes the sub-steps of annealing the magnetic system after the first thermal annealing process, to a second annealing state, and applying a magnetic field in a third direction different from the second direction while maintaining the magnetic system in the second annealing state.