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. 10, 2012
Filed:
Jul. 20, 2009
Carl Schell, Waterford, MI (US);
Guy Wicker, Southfield, MI (US);
Jon Maimon, Manassas, VA (US);
Ovonyx, Inc., Sterling Heights, MI (US);
Abstract
A variable resistance material for memory applications. The material includes a base Ge—Sb—Te composition and further includes As-doping. The materials were included in variable resistance memory devices. Incorporation of As in the variable resistance composition led to a significant increase in the operational life of the device and, unexpectedly, did not reduce the programming speed of the device. In one embodiment, the composition includes at atomic concentration of Ge in the range from 7%-13%, an atomic concentration of Sb in the range from 50%-70%, an atomic concentration of Te in the range from 20%-30%, and an atomic concentration of As in the range from 2%-15%.