发明授权
US08194436B2 Magnetic random access memory, write method therefor, and magnetoresistance effect element
有权
磁性随机存取存储器,其写入方法和磁阻效应元件
- 专利标题: Magnetic random access memory, write method therefor, and magnetoresistance effect element
- 专利标题(中): 磁性随机存取存储器,其写入方法和磁阻效应元件
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申请号: US12678538申请日: 2008-07-07
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公开(公告)号: US08194436B2公开(公告)日: 2012-06-05
- 发明人: Shunsuke Fukami , Tetsuhiro Suzuki , Kiyokazu Nagahara , Norikazu Ohshima , Nobuyuki Ishiwata
- 申请人: Shunsuke Fukami , Tetsuhiro Suzuki , Kiyokazu Nagahara , Norikazu Ohshima , Nobuyuki Ishiwata
- 申请人地址: JP Tokyo
- 专利权人: NEC Corporation
- 当前专利权人: NEC Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-242203 20070919
- 国际申请: PCT/JP2008/062296 WO 20080707
- 国际公布: WO2009/037910 WO 20090326
- 主分类号: G11C11/00
- IPC分类号: G11C11/00 ; G11C11/14 ; G11C11/15
摘要:
A magnetic random access memory includes: a first ferromagnetic layer; an insulating layer provided adjacent to the first ferromagnetic layer; and a first magnetization pinned layer provided adjacent to the insulating layer on a side opposite to the first ferromagnetic layer. The first ferromagnetic layer includes a magnetization free region, a first magnetization pinned region, and a second magnetization pinned region. The magnetization free region has reversible magnetization, and overlaps with the second ferromagnetic layer. The first magnetization pinned region has first pinned magnetization, and is connected to a part of the magnetization free region. The second magnetization pinned region has second pinned magnetization, and is connected to a part of the magnetization free region. The first ferromagnetic layer has magnetic anisotropy in a direction perpendicular to a film surface. The first pinned magnetization and the second pinned magnetization are pinned antiparallel to each other in the direction perpendicular to the film surface.
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