- 专利标题: Drift-insensitive or invariant material for phase change memory
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申请号: US13478932申请日: 2012-05-23
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公开(公告)号: US08737121B2公开(公告)日: 2014-05-27
- 发明人: Chung H. Lam , Jing Li , Binquan Luan , Glenn J. Martyna , Dennis M. Newns
- 申请人: Chung H. Lam , Jing Li , Binquan Luan , Glenn J. Martyna , Dennis M. Newns
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 代理商 Vazken Alexanian
- 主分类号: G11C13/00
- IPC分类号: G11C13/00 ; G11C11/16
摘要:
A method of storing a bit at a memory device is disclosed. A memory cell the memory device is formed of a germanium-deficient chalcogenide glass configured to alternate between an amorphous phase and a crystalline phase upon application of a selected voltage, wherein a drift coefficient of the germanium-deficient chalcogenide glass is less than a drift coefficient of an undoped chalcogenide glass. A voltage is applied to the formed memory cell to select one of the amorphous phase and the crystalline phase to store the bit.