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:
Aug. 13, 2013
Filed:
Jun. 28, 2012
Lidu Huang, Danville, CA (US);
Andrew Thomas Mccallum, San Jose, CA (US);
Simone Pisana, San Jose, CA (US);
Lidu Huang, Danville, CA (US);
Andrew Thomas McCallum, San Jose, CA (US);
Simone Pisana, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A thermally-assisted recording (TAR) disk has an improved insulating layer beneath the chemically-ordered FePt (or CoPt) alloy recording layer. The insulating layer is a solid substitution crystalline alloy MgXO, where the element X is selected from nickel (Ni) and cobalt (Co). The composition of the MgXO crystalline solid substitutional alloy is of the form (MgX)O where y is between 10 and 90, and more preferably between 20 and 80. An optional layer of crystalline 'pure' MgO may be located between the MgXO layer and the FePt recording layer and in contact with the recording layer, or between an underlayer and the MgXO layer.