发明授权
- 专利标题: Method for forming polarization reversal
- 专利标题(中): 形成极化反转的方法
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申请号: US13066744申请日: 2011-04-22
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公开(公告)号: US08293543B2公开(公告)日: 2012-10-23
- 发明人: Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
- 申请人: Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
- 申请人地址: JP Tokyo JP Ibaraki
- 专利权人: Sumitomo Osaka Cement Co., Ltd.,National Institute for Materials Science
- 当前专利权人: Sumitomo Osaka Cement Co., Ltd.,National Institute for Materials Science
- 当前专利权人地址: JP Tokyo JP Ibaraki
- 代理机构: Chapman and Cutler LLP
- 优先权: JP2004-079224 20040318; JP2004-089890 20040325; JP2004-104323 20040331
- 主分类号: H01L21/00
- IPC分类号: H01L21/00
摘要:
A method for forming a ferroelectric spontaneous polarization reversal includes the steps of forming a convexo-concave structure on a top face of a ferroelectric substrate firstly, and then forming a ferroelectric spontaneous polarization region on the substrate including one portion of a convex portion, with a concave portion being formed on the bottom face of the substrate within a region where a ferroelectric spontaneous polarization reversal is to be formed and the convex portion is formed, and then applying an electric field into the substrate. The depth of the concave portion on the bottom face of the substrate may be greater than the height of the convex portion on the top face of the substrate. The width of the concave portion on the bottom face of the substrate may be wider than width of said convex portion on the top face of the substrate.
公开/授权文献
- US20110206860A1 Method for forming polarization reversal 公开/授权日:2011-08-25