JP5126950B2 - 金属酸化物膜の製造方法、積層体、及び、電子デバイス - Google Patents
金属酸化物膜の製造方法、積層体、及び、電子デバイス Download PDFInfo
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- JP5126950B2 JP5126950B2 JP2007161753A JP2007161753A JP5126950B2 JP 5126950 B2 JP5126950 B2 JP 5126950B2 JP 2007161753 A JP2007161753 A JP 2007161753A JP 2007161753 A JP2007161753 A JP 2007161753A JP 5126950 B2 JP5126950 B2 JP 5126950B2
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- 229910044991 metal oxide Inorganic materials 0.000 title claims description 108
- 150000004706 metal oxides Chemical class 0.000 title claims description 108
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title description 15
- 239000013078 crystal Substances 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 24
- 238000002441 X-ray diffraction Methods 0.000 claims description 14
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 6
- 229910002113 barium titanate Inorganic materials 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 229910052454 barium strontium titanate Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 description 131
- 239000000463 material Substances 0.000 description 19
- 229910052788 barium Inorganic materials 0.000 description 8
- 238000004544 sputter deposition Methods 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 150000004703 alkoxides Chemical class 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- OBETXYAYXDNJHR-UHFFFAOYSA-N 2-Ethylhexanoic acid Chemical compound CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- SHZIWNPUGXLXDT-UHFFFAOYSA-N caproic acid ethyl ester Natural products CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 organic acid salt Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 1
- RIYRDRZNXDRTIL-UHFFFAOYSA-L 2-ethylhexanoate;zirconium(2+) Chemical compound [Zr+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O RIYRDRZNXDRTIL-UHFFFAOYSA-L 0.000 description 1
- CWRZJDZAIMOFML-UHFFFAOYSA-N 2-ethylhexanoic acid;strontium Chemical compound [Sr].CCCCC(CC)C(O)=O CWRZJDZAIMOFML-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- VJFFDDQGMMQGTQ-UHFFFAOYSA-L barium(2+);2-ethylhexanoate Chemical compound [Ba+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O VJFFDDQGMMQGTQ-UHFFFAOYSA-L 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 229940070765 laurate Drugs 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1216—Metal oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1229—Composition of the substrate
- C23C18/1241—Metallic substrates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1283—Control of temperature, e.g. gradual temperature increase, modulation of temperature
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1295—Process of deposition of the inorganic material with after-treatment of the deposited inorganic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/14—Decomposition by irradiation, e.g. photolysis, particle radiation or by mixed irradiation sources
- C23C18/143—Radiation by light, e.g. photolysis or pyrolysis
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Vapour Deposition (AREA)
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Formation Of Insulating Films (AREA)
- Semiconductor Memories (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
まず基材を用意した。まず、表面に熱酸化膜が500nm形成された多結晶のSi基板上にスパッタ法によりTiO2膜を20nm形成し、さらに、TiO2膜上にスパッタ法によりPt膜を200nm形成した。Pt膜の表面は(111)結晶面に配向していた。
実施例2〜5では、合計パルス数をそれぞれ2000,3000,4000,6000とする以外は実施例1と同様とした。
実施例6〜7では、金属酸化物膜として、チタン酸バリウム膜に代えて、(Ba,Sr)TiO3膜(膜厚約120nm)を形成し、金属酸化物膜のレーザ照射時の温度を300℃とし、紫外線パルスレーザのパルス周波数を30Hzとし、1パルスのエネルギーを実施例6では80mJ/cm2とし実施例7では90mJ/cm2とする以外はそれぞれ実施例1と同様とした。なお、金属酸化物膜におけるBaとSrとの元素モル比は7:3である。
実施例8では、金属酸化物膜の形成及び当該金属酸化物に対する所定温度条件下での紫外線照射処理を含む工程を合計2回繰り返す以外は実施例1と同様にした。
紫外線照射をせずに、仮焼き後にさらに、800℃で金属酸化物膜の焼成を行った以外は実施例1と同様にして金属酸化物膜を得た。
Claims (5)
- 基材上に、(111)結晶面を有する金属膜を形成する工程と、
前記金属膜の(111)結晶面上に金属酸化物膜を直接形成する工程と、
前記金属酸化物膜の温度を300〜600℃に維持し、前記金属酸化物膜に対して波長100〜400nmの紫外線を照射し、前記金属酸化物膜のX線回折チャートにおける(100)結晶面の回折線のピーク強度をI(100)とし、(110)結晶面の回折線のピーク強度をI(110)としたときのピーク強度比(I(100)/I(110))を2以上とする工程と、を備え、
前記金属酸化物膜はチタン酸バリウム膜又はチタン酸バリウムストロンチウム膜である、金属酸化物膜の製造方法。 - 前記紫外線はレーザ光である請求項1に記載の金属酸化物膜の製造方法。
- 前記レーザ光はパルスレーザ光である請求項2に記載の金属酸化物膜の製造方法。
- 前記パルスレーザ光のエネルギーは、1パルスあたり40〜400mJ/cm2である請求項3に記載の金属酸化物膜の製造方法。
- 前記パルスレーザ光のパルス周波数は1〜1000Hzである請求項3又は4に記載の金属酸化物膜の製造方法。
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JP4963062B2 (ja) * | 2006-12-26 | 2012-06-27 | 独立行政法人産業技術総合研究所 | Aサイト層状秩序化型ペロブスカイトMn酸化物薄膜の製造方法 |
JP5326699B2 (ja) * | 2008-03-26 | 2013-10-30 | Tdk株式会社 | 誘電体素子及びその製造方法 |
JP5263817B2 (ja) * | 2008-03-31 | 2013-08-14 | 独立行政法人産業技術総合研究所 | ペロブスカイト構造酸化物の製造方法 |
JP5740645B2 (ja) * | 2010-04-13 | 2015-06-24 | 国立研究開発法人産業技術総合研究所 | 配向ペロブスカイト酸化物薄膜 |
EP2426684A1 (en) | 2010-09-02 | 2012-03-07 | Mitsubishi Materials Corporation | Dielectric-thin-film forming composition, method of forming dielectric thin film, and dielectric thin film formed by the method |
JP5862286B2 (ja) * | 2011-12-27 | 2016-02-16 | 株式会社リコー | 薄膜製造装置、薄膜製造方法、液滴吐出ヘッドの製造方法 |
JP7147219B2 (ja) * | 2018-03-28 | 2022-10-05 | Tdk株式会社 | 誘電体膜および誘電体素子 |
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JPH06132579A (ja) * | 1992-09-01 | 1994-05-13 | Canon Inc | 変位素子及びそれを用いたプローブ、同プローブを有する機器 |
JP3108797B2 (ja) * | 1992-10-26 | 2000-11-13 | 富士通株式会社 | 高誘電率誘電体薄膜の製造方法 |
JPH09219587A (ja) * | 1996-02-09 | 1997-08-19 | Fujitsu Ltd | 薄膜多層回路基板とその製造方法 |
JPH09326331A (ja) * | 1996-06-05 | 1997-12-16 | Matsushita Electric Ind Co Ltd | (Ba,Sr)TiO3薄膜の製造方法およびそれを用いた薄膜コンデンサ |
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