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:
Mar. 15, 2005
Filed:
Feb. 05, 2001
Terry Mcdaniel, Morgan Hill, CA (US);
Karl A. Belser, San Jose, CA (US);
Edward C. Gage, Apple Valley, MN (US);
Randall H. Victora, New Brighton, MN (US);
James E. Durnin, Apple Valley, MN (US);
Charles F. Brucker, Pleasanton, CA (US);
Terry McDaniel, Morgan Hill, CA (US);
Karl A. Belser, San Jose, CA (US);
Edward C. Gage, Apple Valley, MN (US);
Randall H. Victora, New Brighton, MN (US);
James E. Durnin, Apple Valley, MN (US);
Charles F. Brucker, Pleasanton, CA (US);
Seagate Technology, LLC, Scotts Valley, CA (US);
Abstract
Embodiments of a data storage system having thermally activated readout are provided, in one embodiment, a data storage system includes a source of heat, a substrate, a write layer disposed above the substrate, a copy layer disposed above the write layer, a flying head disposed above the layers and carrying the source of heat for heating a selected spot on the copy and write layers, wherein the write layer comprises a ferromagnetic material selected to have an extremely high coercivity at room temperature and a very high write temperature T, and the copy layer comprises a ferromagnetic material selected to have a coercivity always less than coercivity of the write layer at the same temperature and a copy temperature Tsubstantially less than the write temperature of the write layer.