- 专利标题: Multi-resistive state memory device with conductive oxide electrodes
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申请号: US12286723申请日: 2008-10-01
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公开(公告)号: US20090045390A1公开(公告)日: 2009-02-19
- 发明人: Darrel Rinerson , Wayne Kinney , Edmond R. Ward , Steve Kuo-Ren Hsia , Steven W. Longcor , Christophe J. Chevallier , John Sanchez , Philip F. S. Swab
- 申请人: Darrel Rinerson , Wayne Kinney , Edmond R. Ward , Steve Kuo-Ren Hsia , Steven W. Longcor , Christophe J. Chevallier , John Sanchez , Philip F. S. Swab
- 申请人地址: US CA SUNNYVALE
- 专利权人: UNITY SEMICONDUCTOR CORPORATION
- 当前专利权人: UNITY SEMICONDUCTOR CORPORATION
- 当前专利权人地址: US CA SUNNYVALE
- 主分类号: H01L45/00
- IPC分类号: H01L45/00
摘要:
A memory cell including conductive oxide electrodes is disclosed. The memory cell includes a memory element operative to store data as a plurality of resistive states. The memory element includes a layer of a conductive metal oxide (CMO) (e.g., a perovskite) in contact with an electrode that may comprise one or more layers of material. At least one of those layers of material can be a conductive oxide (e.g., a perovskite such as LaSrCoO3—LSCoO or LaNiO3—LNO) that is in contact with the CMO. The conductive oxide layer can be selected as a seed layer operative to provide a good lattice match with and/or a lower crystallization temperature for the CMO. The conductive oxide layer may also be in contact with a metal layer (e.g., Pt). The memory cell additionally exhibits non-linear IV characteristics, which can be favorable in certain arrays, such as non-volatile two-terminal cross-point memory arrays.
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