发明申请
- 专利标题: Magnectic memory element and magnetic memory apparatus
- 专利标题(中): 磁记忆元件和磁存储装置
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申请号: US12379402申请日: 2009-02-20
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公开(公告)号: US20090213638A1公开(公告)日: 2009-08-27
- 发明人: Hirofumi Morise , Shiho Nakamura , Yuichi Ohsawa , Satoshi Yanagi , Daisuke Saida
- 申请人: Hirofumi Morise , Shiho Nakamura , Yuichi Ohsawa , Satoshi Yanagi , Daisuke Saida
- 申请人地址: JP Tokyo
- 专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址: JP Tokyo
- 优先权: JPP2008-039772 20080221
- 主分类号: G11C11/22
- IPC分类号: G11C11/22 ; G11C11/14 ; G11C11/00 ; H01L29/82
摘要:
A magnetic memory element is provided with first and second ferromagnetic fixed layers, a ferromagnetic memory layer, nonmagnetic first and second intermediate layers. The memory layer is disposed between the first and second fixed layers, and has a variable magnetization direction. In order to cancel asymmetry of a write-in current of the element, the element is provided so that the memory layer receives a larger perpendicular stray field from the first fixed layer than from the second fixed layer, and then a magnetization direction of a portion of the memory layer being nearest to the first intermediate layer and the magnetization direction of the first fixed layer are antiparallel to each other whenever a magnetization direction of a portion of the memory layer being nearest to the second intermediate layer and the magnetization direction of the second fixed layer are parallel to each other, and vice versa.
公开/授权文献
- US07889543B2 Magnetic memory element and magnetic memory apparatus 公开/授权日:2011-02-15
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