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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 9461241 B1

PDFFull Text
Date of Patent:
Oct. 04, 2016

Filed:

Sep. 22, 2015

Magneto-electronic devices and methods of production

Applicant:

The Johns Hopkins University, Baltimore, MD (US);

Inventors:

Weigang Wang, Baltimore, MD (US);

Chia-Ling Chien, Cockeysviile, MD (US);

Assignee:

THE JOHNS HOPKINS UNIVERSITY, Baltimore, MD (US);

Attorneys:

Venable LLP

Henry J. Daley

F. Brock Riggs

Primary Examiner:

David Vu

Assistant Examiner:

Brandon Fox

Int. Cl.
CPC ...
H01L 21/02 (2006.01); H01L 21/00 (2006.01); H01L 43/08 (2006.01); H01L 43/10 (2006.01); H01L 27/22 (2006.01); H01L 29/82 (2006.01); H01L 43/12 (2006.01); G11C 11/16 (2006.01); H01L 43/02 (2006.01); H01F 10/32 (2006.01);
U.S. Cl.
CPC ...
H01L 43/08 (2013.01); G11C 11/161 (2013.01); H01L 27/222 (2013.01); H01L 29/82 (2013.01); H01L 43/02 (2013.01); H01L 43/10 (2013.01); H01L 43/12 (2013.01); H01F 10/3286 (2013.01);
Abstract

A magneto-electronic device includes a first electrode, a second electrode spaced apart from the first electrode, and an electric-field-controllable magnetic tunnel junction arranged between the first electrode and the second electrode. The electric-field-controllable magnetic tunnel junction includes a first ferromagnetic layer, an insulating layer formed on the first ferromagnetic layer, and a second ferromagnetic layer formed on the insulating layer. The first and second ferromagnetic layers have respective first and second magnetic anisotropies that are alignable substantially parallel to each other in a first state and substantially antiparallel in a second state of the electric-field-controllable magnetic tunnel junction. A current of tunneling electrons through the insulating layer is greater in the first state than the second state, and a voltage applied between the first and second electrodes causes a change in at least one of a magnetic anisotropy energy, coercivity or domain wall velocity of at least one of the first and second ferromagnetic layers or a tunneling potential energy barrier through the insulating layer to at least assist in changing the electric-field-controllable magnetic tunnel junction from at least one of the first and second states to the other of the first and second states.

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