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. 07, 2023
Filed:
Sep. 08, 2020
Kioxia Corporation, Tokyo, JP;
Hiroki Kawai, Inazawa Aichi, JP;
Katsuyoshi Komatsu, Yokkaichi Mie, JP;
Tadaomi Daibou, Yokkaichi Mie, JP;
Hiroki Tokuhira, Kawasaki Kanagawa, JP;
Masatoshi Yoshikawa, Yokkaichi Mie, JP;
Yuichi Ito, Yokkaichi Mie, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A resistance variable device of an embodiment includes a stack arranged between a first electrode and a second electrode and including a resistance variable layer and a chalcogen-containing layer. The chalcogen-containing layer contains a material having a composition represented by a general formula: C1C2A, where C1 is at least one element selected from Sc, Y, Zr, and Hf, C2 is at least one element selected from C, Si, Ge, B, Al, Ga, and In, A is at least one element selected from S, Se, and Te, and x, y, and z are numbers representing atomic ratios satisfying 0<x<1, 0<y<1, 0<z<1, and x+y+z=1, and when an oxidation number of the element C1 is set to a, and an oxidation number of the element C2 is set to b, the atomic ratio x of the element C1 satisfies x≤(3−(3+b)×y−z)/(3+a).