JP4255972B2 - 結晶製造方法および装置 - Google Patents
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- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
- C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
- C30B11/08—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
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- C—CHEMISTRY; METALLURGY
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/22—Complex oxides
- C30B29/30—Niobates; Vanadates; Tantalates
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1032—Seed pulling
- Y10T117/1052—Seed pulling including a sectioned crucible [e.g., double crucible, baffle]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1032—Seed pulling
- Y10T117/1056—Seed pulling including details of precursor replenishment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1092—Shape defined by a solid member other than seed or product [e.g., Bridgman-Stockbarger]
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Description
図9A−Eに、本発明の一実施形態にかかるロート型反射板を示す。図5〜7に示した結晶の製造装置に適用できるロート型反射板20であり、図9Aは上面図を、図9Bは側面図を示す。ロート型反射板20は、上方から下方に向かって狭まるロート形状であり、底部には、液体原料21をるつぼ11に落下させる落下口31が設けられている。図9C−Eに示すように、ロートの内側には、らせん状の溝32と、放射状の溝33とを形成してもよい。
Claims (15)
- 炉内に保持されたるつぼ内の原料を加熱液化し、前記るつぼの下方より上方に向かって、前記原料の溶液を徐冷することにより結晶成長させる結晶製造方法において、
前記るつぼが保持された炉内の上下方向の温度分布を、下方に結晶化温度より低い低温領域と、その上方に結晶化温度より高い高温領域とを含む温度勾配を与え、前記原料の溶液と成長した結晶との界面が前記結晶化温度となるように加熱ヒータを調整し、
前記るつぼの上方に設置された原料供給装置から供給される補給原料を、前記るつぼの上方に設置された反射板に供給し、前記補給原料を一定時間前記反射板の表面に保持し、前記補給原料を前記高温領域と同じ温度に加熱して液化し、前記反射板から前記るつぼに供給し、
前記高温領域の温度は、前記結晶化温度より20〜100℃高いソーキング温度であることを特徴とする結晶製造方法。 - 炉内に保持されたるつぼ内の原料を加熱液化し、前記るつぼの下方より上方に向かって、前記原料の融液を徐冷することにより結晶成長させる結晶製造方法において、
前記るつぼが保持された炉内の上下方向の温度分布を、下方に結晶化温度より低い低温領域と、その上方に結晶化温度より高い高温領域とを含む温度勾配を与え、前記原料の溶液と成長した結晶との界面が前記結晶化温度となるように加熱ヒータを調整し、
前記るつぼの上方に設置された原料供給装置から供給される補給原料を、前記るつぼの上方に設置された反射板に供給し、前記補給原料を一定時間前記反射板の表面に保持し、前記補給原料を前記高温領域と同じ温度に加熱して液化し、前記反射板から前記るつぼに供給し、
前記高温領域の温度は、前記結晶化温度より20〜100℃高い過加熱処理温度であることを特徴とする結晶製造方法。 - 前記結晶の主成分は、周期率表Ia族とVa族の酸化物または炭酸塩から構成されており、Ia族はリチウム、カリウムであり、Va族はニオブ、タンタルの少なくとも1つを含むことを特徴とする請求項1または2に記載の結晶製造方法。
- 前記結晶の主成分は、周期率表Ia族とVa族の酸化物または炭酸塩から構成されており、Ia族はリチウム、カリウムであり、Va族はニオブ、タンタルの少なくとも1つを含み、添加不純物として周期率表Ia、IIa族の1または複数種を含むことを特徴とする請求項1または2に記載の結晶製造方法。
- 炉内に保持されたるつぼ内の原料を加熱液化し、前記るつぼの下方より上方に向かって、前記原料の溶液を徐冷することにより結晶を成長させる結晶製造装置において、
補給原料を供給する原料供給装置と、
前記るつぼの上方に設置され、前記原料供給装置から供給される前記補給原料を、結晶化温度より20〜100℃高いソーキング温度により液化し、前記補給原料を一定時間前記反射板の表面に保持し、溶液としてるつぼに落下させる反射板と
を備えたことを特徴とする結晶製造装置。 - 炉内に保持されたるつぼ内の原料を加熱液化し、前記るつぼの下方より上方に向かって、前記原料の融液を徐冷することにより結晶を成長させる結晶製造装置において、
補給原料を供給する原料供給装置と、
前記るつぼの上方に設置され、前記原料供給装置から供給される前記補給原料を、結晶化温度より20〜100℃高い過加熱処理温度により液化し、前記補給原料を一定時間前記反射板の表面に保持し、融液としてるつぼに落下させる反射板と
を備えたことを特徴とする結晶製造装置。 - 前記反射板は、上方から下方に向かって狭まるロート形状であり、底部に、前記液体原料をるつぼに落下させる落下口が設けられていることを特徴とする請求項5または6に記載の結晶製造装置。
- 前記反射板は、ロート形状の内面に、外延から前記落下口に向けて複数の溝を有し、前記補給原料が一定時間表面に保持されているようにしたことを特徴とする請求項7に記載の結晶製造装置。
- 前記反射板は、下方に向かって広がるラッパ形状であることを特徴とする請求項5または6に記載の結晶製造装置。
- 前記反射板は、ラッパ形状の外面に、中心から外延に向けて複数の溝を有し、前記補給原料が一定時間表面に保持されているようにしたことを特徴とする請求項9に記載の結晶製造装置。
- 前記反射板は、前記るつぼとは独立に移動できるように構成されていることを特徴とする請求項5または6に記載の結晶製造装置。
- 前記反射板は、加熱ヒータを含むことを特徴とする請求項5または6に記載の結晶製造装置。
- 前記原料供給装置は、組成の異なる複数の補給原料ごとに設置され、該補給原料の各々の供給量を調整できることを特徴とする請求項5または6に記載の結晶製造装置。
- 前記結晶の主成分は、周期率表Ia族とVa族の酸化物または炭酸塩から構成されており、Ia族はリチウム、カリウムであり、Va族はニオブ、タンタルの少なくとも1つを含むことを特徴とする請求項5または6に記載の結晶製造装置。
- 前記結晶の主成分は、周期率表Ia族とVa族の酸化物または炭酸塩から構成されており、Ia族はリチウム、カリウムであり、Va族はニオブ、タンタルの少なくとも1つを含み、添加不純物として周期率表Ia、IIa族の1または複数種を含むことを特徴とする請求項5または6に記載の結晶製造装置。
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JP3527203B2 (ja) | 1998-05-29 | 2004-05-17 | 東洋通信機株式会社 | 単結晶製造装置および単結晶製造方法 |
US6673330B1 (en) * | 1999-03-26 | 2004-01-06 | National Institute For Research In Inorganic Materials | Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal |
JP4055362B2 (ja) * | 2000-12-28 | 2008-03-05 | 信越半導体株式会社 | 単結晶育成方法および単結晶育成装置 |
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2005
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- 2005-06-10 US US10/571,887 patent/US7591895B2/en active Active
- 2005-06-10 KR KR1020067004839A patent/KR100753322B1/ko active IP Right Grant
- 2005-06-10 JP JP2006514595A patent/JP4255972B2/ja active Active
- 2005-06-10 CN CNB2005800008661A patent/CN100570018C/zh not_active Expired - Fee Related
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Cited By (1)
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KR101484961B1 (ko) * | 2014-08-08 | 2015-01-22 | 한국기계연구원 | 생체 영감의 표면 구조를 갖는 수지상 3차원 나노 구조체 및 그 제조 방법 |
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Publication number | Publication date |
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WO2005121416A1 (ja) | 2005-12-22 |
JPWO2005121416A1 (ja) | 2008-04-10 |
KR20060088538A (ko) | 2006-08-04 |
EP1757716B1 (en) | 2016-08-17 |
EP1757716A4 (en) | 2010-09-15 |
EP1757716A1 (en) | 2007-02-28 |
CN100570018C (zh) | 2009-12-16 |
CN1842619A (zh) | 2006-10-04 |
US20080271666A1 (en) | 2008-11-06 |
US7591895B2 (en) | 2009-09-22 |
KR100753322B1 (ko) | 2007-08-29 |
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