Invention Grant
- Patent Title: Magnetic domain wall random access memory
- Patent Title (中): 磁畴壁随机存取存储器
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Application No.: US12671012Application Date: 2008-07-07
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Publication No.: US08040724B2Publication Date: 2011-10-18
- Inventor: Tetsuhiro Suzuki , Norikazu Ohshima , Shunsuke Fukami , Kiyokazu Nagahara , Nobuyuki Ishiwata
- Applicant: Tetsuhiro Suzuki , Norikazu Ohshima , Shunsuke Fukami , Kiyokazu Nagahara , Nobuyuki Ishiwata
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2007-202943 20070803
- International Application: PCT/JP2008/062277 WO 20080707
- International Announcement: WO2009/019947 WO 20090212
- Main IPC: G11C11/15
- IPC: G11C11/15

Abstract:
A magnetic random access memory includes: a magnetic recording layer including a ferromagnetic layer and having perpendicular magnetic anisotropy; and a magnetic reading layer provided on the magnetic recording layer and used for reading information. The magnetic recording layer includes: a magnetization switching area having reversible magnetization; a first magnetization pinned area connected to a first boundary of the magnetization switching area and having magnetization whose direction is pinned in a first direction; and a second magnetization pinned area connected to a second boundary of the magnetization switching area and having magnetization whose direction is pinned in a second direction. The magnetic reading layer includes: a magnetic sensing layer whose direction of magnetization changes based on a direction of the magnetization of the magnetization switching area; a nonmagnetic barrier layer provided on the magnetic sensing layer; and a pinned layer provided on the nonmagnetic barrier layer.
Public/Granted literature
- US20100193890A1 MAGNETIC DOMAIN WALL RANDOM ACCESS MEMORY Public/Granted day:2010-08-05
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