JP2006228415A - 強誘電層を利用した情報記録媒体及びその製造方法 - Google Patents
強誘電層を利用した情報記録媒体及びその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 230000010287 polarization Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 25
- 239000010936 titanium Substances 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000004528 spin coating Methods 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 238000000137 annealing Methods 0.000 claims description 11
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 2
- 238000010030 laminating Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 231
- 239000013078 crystal Substances 0.000 description 11
- 239000000523 sample Substances 0.000 description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 238000004151 rapid thermal annealing Methods 0.000 description 6
- 229910052454 barium strontium titanate Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- VNSWULZVUKFJHK-UHFFFAOYSA-N [Sr].[Bi] Chemical compound [Sr].[Bi] VNSWULZVUKFJHK-UHFFFAOYSA-N 0.000 description 1
- RZEADQZDBXGRSM-UHFFFAOYSA-N bismuth lanthanum Chemical compound [La].[Bi] RZEADQZDBXGRSM-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- BXQGYABSPVXKAC-UHFFFAOYSA-N iron(3+);oxygen(2-);zirconium(4+) Chemical compound [O-2].[Fe+3].[Zr+4] BXQGYABSPVXKAC-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
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- 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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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02186—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing titanium, e.g. TiO2
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- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
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- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/101—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including resistors or capacitors only
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Abstract
【解決手段】基板上に順次に積層された障壁層、伝導層、シード層、及びシード層上に形成されており、垂直残留分極を有するデータ記録層を備えることを特徴とする情報記録媒体である。
【選択図】図2
Description
42 基板
44 障壁層
46 伝導層
48 シード層
50 強誘電層
Claims (22)
- 基板と、
前記基板上に積層された障壁層と、
前記障壁層上に積層された伝導層と、
前記伝導層上に形成されたシード層と、
前記シード層上に形成されており、垂直残留分極を有するデータ記録層と、を備えることを特徴とする情報記録媒体。 - 前記シード層の厚さは、5nm以下であることを特徴とする請求項1に記載の情報記録媒体。
- 前記シード層は、TiO2層、Bi2O3層及びPbTiO3層のうちいずれか一つであることを特徴とする請求項2に記載の情報記録媒体。
- 前記データ記録層の厚さは、50nm以下であることを特徴とする請求項1に記載の情報記録媒体。
- 前記データ記録層は、PZT層、BST層、SBT層及びBLT層のうちいずれか一つであることを特徴とする請求項1に記載の情報記録媒体。
- 前記データ記録層のグレインサイズは、10nm以下であることを特徴とする請求項1に記載の情報記録媒体。
- 前記データ記録層がPZT層であるとき、ジルコニウムとチタンとの組成比(Zr/Ti)は、25/75及び40/60のうちいずれか一つであることを特徴とする請求項5に記載の情報記録媒体。
- 基板上に障壁層、伝導層を順次に積層する第1工程と、
前記伝導層上にシード層を形成する第2工程と、
前記シード層上に強誘電層を形成する第3工程と、を含むことを特徴とする情報記録媒体の製造方法。 - 前記第2工程は、
前記伝導層上に前記シード層となる物質膜をスピンコーティングする工程と、
前記スピンコーティングされた物質膜を乾燥する工程と、
前記乾燥された物質膜をアニーリングする工程と、をさらに含むことを特徴とする請求項8に記載の情報記録媒体の製造方法。 - スピンコーティングは、4,000rpmで20秒間実施することを特徴とする請求項9に記載の情報記録媒体の製造方法。
- 前記乾燥は、300℃で5分間実施することを特徴とする請求項9に記載の情報記録媒体の製造方法。
- 前記アニーリングは、RTA方法を利用して550℃ないし650℃で110秒間実施することを特徴とする請求項9に記載の情報記録媒体の製造方法。
- 前記シード層は、5nm以下の厚さに形成することを特徴とする請求項8または9に記載の情報記録媒体の製造方法。
- 前記シード層は、TiO2層、Bi2O3層及びPbTiO3層のうちいずれか一つで形成することを特徴とする請求項8または9に記載の情報記録媒体の製造方法。
- 前記第3工程は、
前記シード層上に強誘電層となる物質膜をスピンコーティングする工程と、
前記スピンコーティングされた物質膜を乾燥する工程と、
前記スピンコーティング工程と乾燥工程とを所定の回数ほど反復する工程と、
前記乾燥された物質膜をアニーリングする工程と、をさらに含むことを特徴とする請求項8に記載の情報記録媒体の製造方法。 - 前記スピンコーティングは、4,000rpmで20秒間実施することを特徴とする請求項15に記載の情報記録媒体の製造方法。
- 前記乾燥は、300℃で5分間実施することを特徴とする請求項15に記載の情報記録媒体の製造方法。
- 前記アニーリングは、RTAを利用して550℃ないし650℃で110秒間実施することを特徴とする請求項15に記載の情報記録媒体の製造方法。
- 前記強誘電層は、50nm以下の厚さに形成することを特徴とする請求項8または15に記載の情報記録媒体の製造方法。
- 前記強誘電層は、PZT層、BST層、SBT層及びBLT層のうちいずれか一つで形成することを特徴とする請求項8または15に記載の情報記録媒体の製造方法。
- 前記強誘電層のグレインサイズは、10nm以下であることを特徴とする請求項8または15に記載の情報記録媒体の製造方法。
- 前記強誘電層がPZT層であるとき、前記強誘電層は、ジルコニウムとチタンとの組成比(Zr/Ti)が25/75及び40/60のうちいずれか一つであるPZT層であることを特徴とする請求項20に記載の情報記録媒体の製造方法。
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KR1020050013136A KR100682934B1 (ko) | 2005-02-17 | 2005-02-17 | 강유전층을 이용한 정보 저장 매체 및 그 제조 방법 |
US65815105P | 2005-03-04 | 2005-03-04 |
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JP2006228415A true JP2006228415A (ja) | 2006-08-31 |
Family
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JP2006039695A Pending JP2006228415A (ja) | 2005-02-17 | 2006-02-16 | 強誘電層を利用した情報記録媒体及びその製造方法 |
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Country | Link |
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US (1) | US20060263910A1 (ja) |
EP (1) | EP1693840A1 (ja) |
JP (1) | JP2006228415A (ja) |
Families Citing this family (1)
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JP4556713B2 (ja) * | 2005-03-11 | 2010-10-06 | 株式会社デンソー | セラミックス積層体の製造方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0799252A (ja) * | 1993-06-22 | 1995-04-11 | Sharp Corp | 強誘電体膜の製造方法及びそれを用いた半導体装置 |
US6639262B2 (en) * | 1993-12-10 | 2003-10-28 | Symetrix Corporation | Metal oxide integrated circuit on silicon germanium substrate |
KR100360468B1 (ko) * | 1995-03-20 | 2003-01-24 | 삼성전자 주식회사 | 강유전성박막제조방법및이를적용한캐패시터및그제조방법 |
JP3135483B2 (ja) * | 1995-06-22 | 2001-02-13 | 松下電子工業株式会社 | 半導体装置およびその製造方法 |
US5985404A (en) * | 1996-08-28 | 1999-11-16 | Tdk Corporation | Recording medium, method of making, and information processing apparatus |
US5719417A (en) * | 1996-11-27 | 1998-02-17 | Advanced Technology Materials, Inc. | Ferroelectric integrated circuit structure |
US6146905A (en) * | 1996-12-12 | 2000-11-14 | Nortell Networks Limited | Ferroelectric dielectric for integrated circuit applications at microwave frequencies |
CN1181217C (zh) * | 1997-11-21 | 2004-12-22 | 三星电子株式会社 | 使用籽晶层形成pzt薄膜的方法 |
US6709776B2 (en) * | 2000-04-27 | 2004-03-23 | Tdk Corporation | Multilayer thin film and its fabrication process as well as electron device |
JP2002170938A (ja) * | 2000-04-28 | 2002-06-14 | Sharp Corp | 半導体装置およびその製造方法 |
JP3591497B2 (ja) * | 2001-08-16 | 2004-11-17 | ソニー株式会社 | 強誘電体型不揮発性半導体メモリ |
US7031138B2 (en) * | 2002-12-09 | 2006-04-18 | Infineon Technologies Ag | Ferroelectric capacitor and process for its manufacture |
US7198959B2 (en) * | 2004-06-30 | 2007-04-03 | Infineon Technologies Ag | Process for fabrication of a ferrocapacitor |
-
2006
- 2006-02-16 EP EP06250825A patent/EP1693840A1/en not_active Ceased
- 2006-02-16 JP JP2006039695A patent/JP2006228415A/ja active Pending
- 2006-02-17 US US11/355,968 patent/US20060263910A1/en not_active Abandoned
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US20060263910A1 (en) | 2006-11-23 |
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