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. 24, 1996
Filed:
Jun. 30, 1994
Applicant:
Inventor:
Robert L White, Stanford, CA (US);
Assignee:
Board of Trustees Leland Stanford, Jr. University, Stanford, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; B32B / ;
U.S. Cl.
CPC ...
428195 ; 428218 ; 428692 ; 4286 / ; 4286 / ; 4286 / ; 428336 ; 428900 ; 427128 ; 427130 ; 283 82 ;
Abstract
Magnetic recording media comprising an ordered, ultra-high density array of 500 .ANG. diameter circular magnetic thin film islands on a substrate. The magnetic material supports magnetization perpendicular to the film plan, and each circular island comprises a single magnetic domain and a single information storage bit. An areal bit density of 10.sup.11 bits/in.sup.2 can be achieved by such an array. The magnetic array is generated using a single level mask comprised of a self-ordering polymer array, either an array of polymer spheres or a regular array of polymeric blocks in a phase-separating polymer film.