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:
Dec. 02, 2008
Filed:
Feb. 01, 2005
Hiroyuki Ohmori, Kanagawa, JP;
Kojiro Yagami, Ibaraki, JP;
Hiroyuki Ohmori, Kanagawa, JP;
Kojiro Yagami, Ibaraki, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magnetic memoryincludes a memory layerfor holding information by a magnetization state of a magnetic material, wherein the memory layeris composed of at least magnetic layersof two layers and a nonmagnetic layerinterposed between the magnetic layersof two layers, one magnetic layerof the magnetic layersof two layers has a large product of a magnetization damping constant, a magnetization amount and magnetic anisotropy and a small product of the magnetization amount and the magnetic anisotropy as compared with those of the other magnetic layer. Also, information is recorded on the magnetic memory devicewith application of an electric current flowing in the memory layer. Further, a magnetic memory includes the magnetic memory deviceto record information with application of an electric current flowing in the recording layer. There are provided a magnetic memory device capable of recording information with application of a low electric current and a magnetic memory device driving method for recording and reading information on and from the magnetic memory device and a magnetic memory including the magnetic memory device.