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 8790797 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 29, 2014

Filed:

Sep. 01, 2011
Applicants:

Yasuhiro Fukuma, Wako, JP;

Yoshichika Otani, Wako, JP;

Inventors:

Yasuhiro Fukuma, Wako, JP;

Yoshichika Otani, Wako, JP;

Assignee:

RIKEN, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01); G03F 7/20 (2006.01); G11C 11/16 (2006.01); H01L 29/66 (2006.01); G01R 33/09 (2006.01);
U.S. Cl.
CPC ...
G11C 11/161 (2013.01); G11B 5/39 (2013.01); H01L 29/66984 (2013.01); G01R 33/098 (2013.01);
Abstract

The spin injection source comprises a nonmagnetic conductor, an MgO film, and a ferromagnet, and injects spin from the ferromagnet to the nonmagnetic conductor. The MgO film is annealed at temperature of between 300° C. and 500° C. The annealing duration is preferably between 30 and 60 minutes. By annealing, the oxygen vacancies increases and the electric resistance of MgO film decreases. And thus the spin injection efficiency in the spin injection source improves.


Find Patent Forward Citations

Fukuma, Yasuhiro. (2014). Spin injection source and manufacturing method thereof (U.S. Patent No. 8790797). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8790797

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