Invention Grant
- Patent Title: Multi-resistive state memory device with conductive oxide electrodes
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Application No.: US12653486Application Date: 2009-12-14
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Publication No.: US07889539B2Publication Date: 2011-02-15
- Inventor: Darrell Rinerson , Wayne Kinney , Edmond Ward , Steve Kuo-Ren Hsia , Steven W. Longcor , Christophe Chevallier , John E. Sanchez, Jr. , Philip Swab
- Applicant: Darrell Rinerson , Wayne Kinney , Edmond Ward , Steve Kuo-Ren Hsia , Steven W. Longcor , Christophe Chevallier , John E. Sanchez, Jr. , Philip Swab
- Assignee: Unity Semiconductor Corporation
- Current Assignee: Unity Semiconductor Corporation
- Main IPC: G11C11/00
- IPC: G11C11/00 ; H01L49/00

Abstract:
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.
Public/Granted literature
- US20100157657A1 Multi-resistive state memory device with conductive oxide electrodes Public/Granted day:2010-06-24
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