Invention Grant
- Patent Title: Close shaped magnetic multi-layer film comprising or not comprising a metal core and the manufacture method and the application of the same
- Patent Title (中): 包括或不包含金属芯的闭合形状的多层膜及其制造方法及其应用
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Application No.: US12159657Application Date: 2006-12-31
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Publication No.: US07936595B2Publication Date: 2011-05-03
- Inventor: Xiufeng Han , Ming Ma , Qihang Qin , Hongxiang Wei , Lixian Jiang , Yunan Han
- Applicant: Xiufeng Han , Ming Ma , Qihang Qin , Hongxiang Wei , Lixian Jiang , Yunan Han
- Applicant Address: CN Beijing
- Assignee: Institute of Physics, Chinese Academy of Sciences
- Current Assignee: Institute of Physics, Chinese Academy of Sciences
- Current Assignee Address: CN Beijing
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: CN200510135365 20051231; CN200510135370 20051231; CN200610000191 20060109; CN200610011166 20060111; CN200610011167 20060111; CN200610011168 20060111
- International Application: PCT/CN2006/003799 WO 20061231
- International Announcement: WO2007/076718 WO 20070712
- Main IPC: G11C11/14
- IPC: G11C11/14
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.
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