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. 15, 1998
Filed:
Aug. 07, 1997
Applicant:
Inventors:
Brij Bihari Lal, San Jose, CA (US);
Sudhir S Malhotra, Fremont, CA (US);
Michael A Russak, Los Gatos, CA (US);
Assignee:
HMT Technology Corporation, Fremont, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428 653 ; 478 657 ; 478336 ; 478611 ; 478635 ; 478667 ; 478678 ; 478680 ; 478681 ; 4786 / ; 4786 / ; 4786 / ; 4786 / ; 478900 ; 2041922 ; 427127 ; 427128 ; 427130 ; 427131 ; 427132 ;
Abstract
An improvement in a magnetic recording medium having an underlayer and a magnetic recording layer is described. The improvement, effective to reduce media anisotropy, includes deposition of a prelayer on the substrate, prior to deposition of the underlayer. The prelayer is deposited to a thickness of between 10-60 .ANG. and is composed of an CoCr-based alloy having a defined saturation magnetization.