JP2005135576A - 導電性プローブ及び強誘電性記憶媒体を含むデータ記憶デバイス - Google Patents
導電性プローブ及び強誘電性記憶媒体を含むデータ記憶デバイス Download PDFInfo
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- JP2005135576A JP2005135576A JP2004313279A JP2004313279A JP2005135576A JP 2005135576 A JP2005135576 A JP 2005135576A JP 2004313279 A JP2004313279 A JP 2004313279A JP 2004313279 A JP2004313279 A JP 2004313279A JP 2005135576 A JP2005135576 A JP 2005135576A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/02—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using ferroelectric record carriers; Record carriers therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/08—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by electric charge or by variation of electric resistance or capacitance
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1409—Heads
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1418—Disposition or mounting of heads or record carriers
- G11B9/1427—Disposition or mounting of heads or record carriers with provision for moving the heads or record carriers relatively to each other or for access to indexed parts without effectively imparting a relative movement
- G11B9/1436—Disposition or mounting of heads or record carriers with provision for moving the heads or record carriers relatively to each other or for access to indexed parts without effectively imparting a relative movement with provision for moving the heads or record carriers relatively to each other
- G11B9/1445—Disposition or mounting of heads or record carriers with provision for moving the heads or record carriers relatively to each other or for access to indexed parts without effectively imparting a relative movement with provision for moving the heads or record carriers relatively to each other switching at least one head in operating function; Controlling the relative spacing to keep the head operative, e.g. for allowing a tunnel current flow
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- Theoretical Computer Science (AREA)
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- Semiconductor Memories (AREA)
Abstract
【解決手段】データ記憶デバイス(110)は、先端部を有する導電性プローブ(112)と、基板(114)と、極性調整される強誘電性材料の層(118)とを含むデータ記憶媒体(116)を含む。強誘電体層(118)は、プローブ先端部と基板(114)との間に存在する。
【選択図】図1
Description
112 導電性プローブ
114 基板
116 強誘電性記憶媒体
118 極性調整される強誘電体層
120 読出し/書込み回路
122 保護層
210 双極子
Claims (11)
- データ記憶デバイス(110)であって、
先端部を有する導電性プローブ(121)と、
基板(114)と、及び
極性調整される強誘電性材料からなる層(118)を含むデータ記憶媒体(116)であって、前記強誘電体の層が前記基板上にあり、かつ前記先端部と前記基板との間にある、データ記憶媒体とを含む、データ記憶デバイス。 - 前記プローブの先端部は、直径が約100ナノメートルより大きくない、請求項1に記載のデータ記憶デバイス。
- 前記強誘電体層内の電気双極子(210)が基準方向に向けられ、前記デバイスは、前記プローブが前記強誘電体層上の一定間隔の体積(410、412)に書込みを行うようにするための回路(120)を更に含み、前記一定間隔の体積内の双極子(210)が、第1の論理値(410)を格納するために前記基準方向に向けられ、第2の論理値(412)を格納するために異なる方向に向けられる、請求項1に記載のデータ記憶デバイス。
- 前記強誘電体層を覆う保護層(122)を更に含み、前記保護層が前記プローブの先端部と前記強誘電体層との間の相互作用を妨げない、請求項1に記載のデータ記憶デバイス。
- 前記基板が半導体部分を含み、前記半導体部分および前記強誘電体層が、電気的な接合部を形成し、前記デバイスが、前記プローブを用いて前記接合部のキャパシタンス又は漏れ電流の変化を検知する(612)ための読出し回路(120)を更に含む、請求項1に記載のデータ記憶デバイス。
- 前記基板が半導体部分を含み、前記半導体部分および前記強誘電体層が、電気的な接合部を形成し、前記デバイスが、前記プローブを用いて、前記強誘電性材料上の局所的な領域にAC信号を印加し(622)、誘電率の非線形成分の変化を検出する(624)ための読出し回路(120)を更に含む、請求項1に記載のデータ記憶デバイス。
- 前記基板が半導体部分を含み、前記半導体部分および前記強誘電体層が、接合部を形成し、前記接合部の付近に導電性チャネルが存在し、前記導電性チャネルの幅が複数のビットにわたり、前記デバイスが、前記ビットを読み出すための回路を更に含み、その回路が前記チャネルの少なくとも1つの特性を検知する(632)、請求項1に記載のデータ記憶デバイス。
- 前記プローブが前記強誘電体層にわたって走査されている間に、前記プローブの変形を検出する(642)ための手段を更に含み、前記変形が前記誘電体層内の分極の変化を示す、請求項1に記載のデータ記憶デバイス。
- 前記プローブが前記誘電体層上のビットに低電圧のバイアスを印加するようにし(650)、かつ前記強誘電体層から前記先端部に流れる漏れ電流を検出する(652)ための読出し回路を更に含み、前記漏れ電流が前記強誘電体層内の極性の反転を示す、請求項1に記載のデータ記憶デバイス。
- 前記プローブがAC信号を印加するようにし(662)、かつ前記先端部と前記強誘電体層との間のキャパシタンスを検出する(664)ための読出し回路(120)を更に含み、前記キャパシタンスの変化が極性の反転を示す、請求項1に記載のデータ記憶デバイス。
- 読出し操作を実行するための回路を更に含み、その回路が、
前記強誘電体層の表面から電荷を転送し(670)、及び
前記転送された電荷を検知して、走査されたビットにおける極性の反転を示す(672)、請求項1に記載のデータ記憶デバイス。
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US10/698,717 US7391706B2 (en) | 2003-10-31 | 2003-10-31 | Data storage device including conductive probe and ferroelectric storage medium |
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US (2) | US7391706B2 (ja) |
JP (1) | JP2005135576A (ja) |
GB (1) | GB2407694B (ja) |
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US7869336B1 (en) | 2011-01-11 |
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