公开(公告)号：US20090168506A1

公开(公告)日：2009-07-02

申请号：US12159657

申请日：2006-12-31

申请人： Xiufeng Han ,  Ming Ma ,  Qihang Tan ,  Hongxiang Wei ,  Lixian Jiang ,  Yunan Han

发明人： Xiufeng Han ,  Ming Ma ,  Qihang Tan ,  Hongxiang Wei ,  Lixian Jiang ,  Yunan Han

IPC分类号： G11C11/14 ,  G11B5/706 ,  B44C1/22 ,  H01L29/82

CPC分类号： G11C11/155 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11C11/161 ,  G11C11/1655 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  H01F10/1936 ,  H01F10/3254 ,  H01F10/3268 ,  H01F10/329 ,  H01F41/302 ,  H01L27/228 ,  H01L43/08

摘要： 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.

摘要翻译： 磁性多层膜中的每层是闭环或椭圆环，并且磁性单元中的铁磁性膜的磁矩或磁通处于顺时针或逆时针处于接近状态。 将金属芯置于紧密形状的磁性多层膜中的几何中心位置。 金属芯的横截面是相应的圆形或椭圆形。 MRAM由具有或不具有金属芯的闭合磁性多层膜制成。 通过微加工方法形成紧密形状的磁性多层膜。 近似形状的磁性多层膜可以广泛用于以磁性多层膜为核心的多种器件，如MRAM，计算机中的磁珠，磁敏传感器，磁性逻辑器件和自旋晶体管。