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:
Jul. 11, 1995
Filed:
Jun. 30, 1992
Brij B Lal, San Jose, CA (US);
Tadashi Shinohara, Fremont, CA (US);
HMT Technology Corporation, Fremont, CA (US);
Abstract
A magnetic thin-film media with high coercivity and low noise characteristics is disclosed. The medium has a gradient-composition thin-film magnetic layer in which a lowermost stratum is composed of a first alloy, preferably, having relatively low noise and low magnetic remanence characteristics, and an uppermost stratum composed of a second alloy having relatively high noise and high magnetic remanence characteristics. The medium is characterized by a coercivity which is substantially greater, and a media noise which is substantially less than that of a similar medium whose magnetic thin-film layer is composed of either the first or second alloy alone. Also disclosed is a method of producing such a medium.