发明授权
- 专利标题: Ferroelectric recording medium and writing method for the same
- 专利标题(中): 铁电记录介质和写入方法相同
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申请号: US12128788申请日: 2008-05-29
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公开(公告)号: US07889628B2公开(公告)日: 2011-02-15
- 发明人: Hyoung-soo Ko , Eun-sik Kim , Sung-dong Kim , Ju-hwan Jung , Hong-sik Park , Chul-min Park , Seung-bum Hong
- 申请人: Hyoung-soo Ko , Eun-sik Kim , Sung-dong Kim , Ju-hwan Jung , Hong-sik Park , Chul-min Park , Seung-bum Hong
- 申请人地址: KR Suwon-si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-si
- 代理机构: Sughrue Mion, PLLC
- 优先权: KR10-2005-0011410 20050207
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
A ferroelectric recording medium and a writing method for the same are provided. The ferroelectric recording medium includes a ferroelectric layer which reverses its polarization when receiving a predetermined coercive voltage. A nonvolatile anisotrophic conduction layer is formed on the ferroelectric layer. A resistance of the anisotrophic conduction layer decreases when receiving a first voltage lower than the coercive voltage, and the resistance of the anisotrophic conduction layer increases when receiving a second voltage higher than the coercive voltage. Multi-bit information is stored by a combination of polarization states of the ferroelectric layer and the resistance of the anisotrophic conduction layer. Accordingly, multiple bits can be expressed on one domain of the ferroelectric recording medium.
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