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:
May. 03, 2011
Filed:
Dec. 31, 2006
Xiufeng Han, Beijing, CN;
Ming MA, Beijing, CN;
Qihang Qin, Beijing, CN;
Hongxiang Wei, Beijing, CN;
Lixian Jiang, Beijing, CN;
Yunan Han, Beijing, CN;
Xiufeng Han, Beijing, CN;
Ming Ma, Beijing, CN;
Qihang Qin, Beijing, CN;
Hongxiang Wei, Beijing, CN;
Lixian Jiang, Beijing, CN;
Yunan Han, Beijing, CN;
Institute of Physics, Chinese Academy of Sciences, Beijing, CN;
Abstract
Each layer in the magnetic multilayer film is a closed ring or oval ring and the magnetic moment or flux of the ferromagnetic film in the magnetic unit is in close state either clockwise or counterclockwise. A metal core is put in the geometry center position in the close-shaped magnetic multilayer film. The cross section of the metal core is a corresponding circular or oval. A MRAM is made of the closed magnetic multilayer film with or without a metal core. The close-shaped magnetic multilayer film is formed by micro process method. The close-shaped magnetic multilayer film can be used broadly in a great variety of device that uses a magnetic multilayer film as the core, such as MRAM, magnetic bead in computer, magnetic sensitive sensor, magnetic logic device and spin transistor.