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:
Jul. 29, 2003
Filed:
Sep. 13, 2001
Governor of Akita Prefecture, Akita, JP;
Abstract
An information recording layer consisting of a composite of an ordered alloy of L1 crystal structure selected from a group A, and MgO is used for a perpendicular magnetic recording medium. The group A includes an FePt ordered alloy, a CoPt ordered alloy, an FePd ordered alloy and an alloy thereof. This information recording layer has a very small magnetic domain structure and allows high density recording as seen from a signal output spectrum showing a result of a recording and reproducing evaluation of a magnetic recording medium in one example. The information recording layer can be formed at lower film formation temperature than a temperature of a composite thin film of an ordered alloy of L1 crystal structure according to a conventional technique.