发明授权
- 专利标题: Magnetic random access memory
- 专利标题(中): 磁性随机存取存储器
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申请号: US12865194申请日: 2009-01-09
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公开(公告)号: US08149615B2公开(公告)日: 2012-04-03
- 发明人: Shunsuke Fukami , Nobuyuki Ishiwata , Tetsuhiro Suzuki , Norikazu Ohshima , Kiyokazu Nagahara
- 申请人: Shunsuke Fukami , Nobuyuki Ishiwata , Tetsuhiro Suzuki , Norikazu Ohshima , Kiyokazu Nagahara
- 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: JP2008-038066 20080219
- 国际申请: PCT/JP2009/050210 WO 20090109
- 国际公布: WO2009/104428 WO 20090827
- 主分类号: G11C11/00
- IPC分类号: G11C11/00 ; G11C11/14 ; G11C11/15
摘要:
An MRAM has: a memory cell including a first magnetoresistance element; and a reference cell including a second magnetoresistance element. The first magnetoresistance element has a first magnetization free layer, a first magnetization fixed layer, a second magnetization free layer and a first nonmagnetic layer sandwiched between the first magnetization fixed layer and the second magnetization free layer. The first magnetization free layer has: first and second magnetization fixed regions; and a magnetization free region. The magnetization free region and the second magnetization free layer are magnetically coupled to each other. Whereas, the second magnetoresistance element has: a third magnetization free layer whose magnetization easy axis is parallel to a second direction; a second magnetization fixed layer whose magnetization direction is fixed in a third direction perpendicular to the second direction; and a second nonmagnetic layer sandwiched between the second magnetization fixed layer and the third magnetization free layer.
公开/授权文献
- US20100309712A1 MAGNETIC RANDOM ACCESS MEMORY 公开/授权日:2010-12-09
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