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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.:

US 9722173 B1

PDFFull Text
Date of Patent:
Aug. 01, 2017

Filed:

Aug. 26, 2016

Memory device

Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Inventors:

Daisuke Saida, Shinagawa, JP;

Naoharu Shimomura, Meguro, JP;

Assignee:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Hoai V Ho

Assistant Examiner:

Jay Radke

Int. Cl.
CPC ...
G11C 11/15 (2006.01); H01L 43/10 (2006.01); H01L 43/08 (2006.01); H01L 27/22 (2006.01); H01F 10/193 (2006.01); H01F 10/32 (2006.01); G11C 11/16 (2006.01); H01F 1/03 (2006.01);
U.S. Cl.
CPC ...
H01L 43/10 (2013.01); G11C 11/165 (2013.01); G11C 11/1675 (2013.01); G11C 11/1693 (2013.01); H01F 1/0306 (2013.01); H01F 10/1936 (2013.01); H01F 10/3286 (2013.01); H01L 27/228 (2013.01); H01L 43/08 (2013.01); H01F 10/3295 (2013.01);
Abstract

According to one embodiment, a memory device includes a stacked body and a controller. The stacked body includes a first magnetic layer, a second magnetic layer stacked with the first magnetic layer, and a first nonmagnetic layer provided between the first magnetic layer and the second ferromagnetic layer. The second ferromagnetic layer includes a first portion and a second portion stacked with the first portion. The controller causes a current to flow in the stacked body in a programming period. The programming period includes a first and a second period. The current has a first value in the first period and a second value in the second period. The second value is less than the first value.

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