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:
Aug. 25, 2009
Filed:
Mar. 23, 2006
Akihito Sawa, Tsukuba, JP;
Takeshi Fujii, Hachioji, JP;
Masashi Kawasaki, Tsukuba, JP;
Yoshinori Tokura, Tsukuba, JP;
Akihito Sawa, Tsukuba, JP;
Takeshi Fujii, Hachioji, JP;
Masashi Kawasaki, Tsukuba, JP;
Yoshinori Tokura, Tsukuba, JP;
Abstract
A nonvolatile memory element in which RbMbMnOhaving higher insulation properties than RaMaMnOis inserted between the RaMaMnOand a metal having a shallow work function or a low electronegativity in order to improve resistance change properties and switching properties and to control the resistance change properties. (In the formulas, Ra and Rb represent rare earth elements and are solid solutions of one or more types of rare earth elements. Average ionic radius of the Rb is smaller than that of the Ra. Ma and Mb represent alkaline earth metals and are solid solutions of one or more types of alkaline earth metals. 0<x, y<1).