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:
Mar. 28, 2000
Filed:
Oct. 15, 1998
Akira Ishiguro, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a method of manufacturing a thin-film magnetic device having a magnetic film provided with uniaxial magnetic anisotropy, the magnetic film, which is formed on a Si wafer, is patterned, before it is heat-treated in a magnetic field, in such a manner that the length of the magnetic film in a direction parallel to that of the magnetic field is greater than the length of the magnetic film in a direction perpendicular thereto. The magnetic film is divided into band-like magnetic films, and the band-like magnetic films are heat-treated in the magnetic field and each provided with uniaxial magnetic anisotropy. The band-like magnetic films are patterned and each divided again into magnetic films of a chip size. Thus, a crack or a blister can be prevented from occurring on the magnetic film, and the magnetic characteristics of the magnetic film can be prevented from deteriorating.