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:
Dec. 27, 2016
Filed:
Jan. 21, 2016
Hgst Netherlands B.v., Amsterdam, NL;
Michael Konrad Grobis, San Jose, CA (US);
Olav Hellwig, San Jose, CA (US);
Bruce David Terris, Sunnyvale, CA (US);
Sung Hun Wee, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A heat-assisted magnetic recording medium has a heat-sink layer, a chemically-ordered FePt alloy magnetic layer and a perovskite oxide intermediate layer between the heat-sink layer and the magnetic layer. The perovskite oxide intermediate layer may function as both a seed layer for the magnetic layer and a thermal barrier layer, as just a seed layer for the magnetic layer, or as just a thermal barrier layer. The intermediate layer is formed of a material selected from a ABOperovskite oxide (where A is selected from one or more of Ba, Sr and Ca and B is selected from one or more of Zr, Ce, Hf, Sn, Ir, and Nb), and a AREBOrare earth double perovskite oxide (where RE is a rare earth element, A is selected from Ba, Sr and Ca, and B is selected from Nb and Ta).