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. 05, 2008
Filed:
Apr. 22, 2004
Erol Girt, San Jose, CA (US);
Li-lien Lee, San Jose, CA (US);
Samuel D. Harkness, Iv, Berkeley, CA (US);
Erol Girt, San Jose, CA (US);
Li-Lien Lee, San Jose, CA (US);
Samuel D. Harkness, IV, Berkeley, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A novel method of manufacturing a longitudinal granular oxide recording medium is disclosed. The method preferably entails obtaining a non-magnetic substrate, heating the substrate at a temperature Tthat is greater than 150° C., forming a first layer with body-centered cubic atomic structure and with a <200> preferred growth orientation, cooling the substrate to a temperature Tand forming a second layer comprising a magnetic oxide-containing granular magnetic layer with a hexagonal close packed atomic structure and with a <11-20> preferred growth orientation. The magnetic oxide-containing granular magnetic layer contains magnetic crystal grains that are substantially isolated by an inter-granular region comprising a non-magnetic substance, wherein the non-magnetic substance is preferably an oxide-containing material.