JP6623569B2 - 薄膜誘電体及び薄膜コンデンサ素子 - Google Patents
薄膜誘電体及び薄膜コンデンサ素子 Download PDFInfo
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- JP6623569B2 JP6623569B2 JP2015115579A JP2015115579A JP6623569B2 JP 6623569 B2 JP6623569 B2 JP 6623569B2 JP 2015115579 A JP2015115579 A JP 2015115579A JP 2015115579 A JP2015115579 A JP 2015115579A JP 6623569 B2 JP6623569 B2 JP 6623569B2
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- film
- solid solution
- thin film
- batio
- dielectric
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- 239000010409 thin film Substances 0.000 title claims description 121
- 239000003990 capacitor Substances 0.000 title claims description 49
- 239000010408 film Substances 0.000 claims description 197
- 239000013078 crystal Substances 0.000 claims description 20
- 229910052712 strontium Inorganic materials 0.000 claims description 12
- 229910052726 zirconium Inorganic materials 0.000 claims description 11
- 229910052735 hafnium Inorganic materials 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 239000003989 dielectric material Substances 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 description 150
- 238000000034 method Methods 0.000 description 48
- 229910052751 metal Inorganic materials 0.000 description 47
- 239000002184 metal Substances 0.000 description 47
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 24
- 239000000203 mixture Substances 0.000 description 23
- 238000004544 sputter deposition Methods 0.000 description 21
- 239000000758 substrate Substances 0.000 description 18
- 238000004729 solvothermal method Methods 0.000 description 15
- 239000010936 titanium Substances 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- 239000010955 niobium Substances 0.000 description 13
- 239000002131 composite material Substances 0.000 description 12
- 239000011575 calcium Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 125000005842 heteroatom Chemical group 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 235000019441 ethanol Nutrition 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003980 solgel method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000001771 vacuum deposition Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 229910002367 SrTiO Inorganic materials 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007733 ion plating Methods 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- FBOUIAKEJMZPQG-AWNIVKPZSA-N (1E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol Chemical compound C1=NC=NN1/C(C(O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1Cl FBOUIAKEJMZPQG-AWNIVKPZSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 229910002353 SrRuO3 Inorganic materials 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910015802 BaSr Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 238000003991 Rietveld refinement Methods 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 239000003012 bilayer membrane Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001810 electrochemical catalytic reforming Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000001659 ion-beam spectroscopy Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process 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
- 238000003756 stirring Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/10—Metal-oxide dielectrics
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/49—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
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- C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- C23C14/088—Oxides of the type ABO3 with A representing alkali, alkaline earth metal or Pb and B representing a refractory or rare earth metal
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- C23C18/1216—Metal oxides
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- 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
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- 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
- C23C18/1225—Deposition of multilayers of inorganic material
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- 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
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- C23C18/125—Process of deposition of the inorganic material
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- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
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- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
- H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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Description
特に、高誘電率を実現できる薄膜誘電体及び当該薄膜誘電体を利用した薄膜コンデンサ素子に関する。
薄膜コンデンサ素子100は、金属板11と、金属板11上に設けられたBaTiO3をベースとしたペロブスカイト固溶体多結晶膜(以後BT固溶体多結晶膜と記述)12、BT固溶体多結晶膜12上に形成されたKNbO3をベースとしたペロブスカイト固溶体膜(以後KN固溶体膜と記述)13とBaTiO3をベースとしたペロブスカイト固溶体膜(以後BT固溶体膜と記述)14との繰り返し積層により形成された薄膜誘電体22を挟み金属板11と対向して設けられた金属膜15、から構成されている。
BT固溶体多結晶膜12の形成方法としては、通常の薄膜形成法で作製される。例えば、真空蒸着法、高周波スパッタリング法、PLD法、MOCVD(Metal Organic Chemical Vapor Deposition)法、MOD(Metal Organic Decomposition)法、ゾル−ゲル法などの各種薄膜形成法を用いて形成することができる。上述の薄膜形成法にて成膜した場合、一般的にその結晶粒径が10nm〜300nm、膜の厚みが50nm〜5μmであるが、コストを考えなければ単結晶膜を形成しても良い。前記BT固溶体多結晶膜12は、BaTiO3のBaの一部が0モル%〜40モル%の範囲でCaまたはSrに、Tiの一部が0モル%〜40モル%の範囲でZr、Hfに置換された多結晶膜である。
また、前述の置換量がそれぞれの範囲を超えた場合は、格子定数が変化するため、界面において後述するような格子定数が連続的に変化する結晶構造傾斜領域、つまり結晶格子の歪が発生せず、比誘電率の大きな向上がみられなくなる。
まず、金属板11を用意し、その表面に通常の薄膜形成法でBT固溶体多結晶膜12を形成する。例えば、真空蒸着法、高周波スパッタリング法、PLD法、MOCVD法、MOD法、ゾル−ゲル法などの各種薄膜形成法を用いて形成することができる。
(金属板(ここではPt板を使用)上へのBaTiO3多結晶膜の形成)
まず、表面を研磨して平坦にした10mm×10mm、厚み1mmのPt板上に、以下のような条件で50nmのBT固溶体多結晶膜12を形成した。
スパッタリング法により、ターゲット:BaTiO3、雰囲気:アルゴン(Ar)/酸素(O2)=3/1、圧力:0.8Pa、高周波電力:200W、基板温度:200℃の条件で、50nmのBaTiO3多結晶膜を形成した。
このようにしてPt板上に形成したBT固溶体多結晶膜12を、内容量50mlのテフロン(登録商標)容器中に溶媒となるエチルアルコール20ml、および表1に示すような組成となるよう、十分に乾燥させたKOH、NaOH、LiOH、Nb2O5、Ta2O5を入れてよく攪拌した。その後、オートクレーブ中で230℃、8時間反応させた。反応後、Pt板上に形成したBT固溶体多結晶膜12をエタノールおよび純水で洗浄して300℃で乾燥させてBaTiO3−KNbO3固溶体二層膜とした。
このようにして作製したBaTiO3−KNbO3固溶体二層膜を、内容量50mlのテフロン(登録商標)容器中に溶媒となる水20ml、および表1に示すような組成となるよう十分に乾燥させたBa(OH)2、Sr(OH)2、Ca(OH)2、TiO2、ZrO2、HfO2を入れてよく攪拌した。その後、オートクレーブ中で180℃、20時間反応させた。反応後、Pt板上に形成したBaTiO3−KNbO3固溶体膜をエタノールおよび純水で洗浄して200℃で乾燥させてBaTiO3−KNbO3固溶体−BaTiO3固溶体三層膜とした。
上記のようにして作製した薄膜誘電体膜22に、5mm×5mmの上部電極となるPtの金属膜15をスパッタリング法で一般的な条件により形成し、薄膜コンデンサ素子100を作製した。
それぞれ作製した薄膜コンデンサ素子100を、アジレント・テクノロジー株式会社製のインピーダンスアナライザ(4294A)を用いて、室温(25℃)、測定周波数100kHzで静電容量を測定した。測定された静電容量と、薄膜コンデンサ素子100の電極寸法および電極間距離とから算出した。
作製後した薄膜誘電体膜22の組成は、蛍光X線分析(X−ray Fluorencence Analysis:XRF)を使用してすべての試料について測定を行い、表1に記載の組成であることを確認した。
実施例1〜38と同様に、表面を研磨して平坦にした10mm×10mm、厚み1mmの金属板11(ここではNi板を使用)上に、50nmのBT固溶体多結晶膜12を形成し、800℃でアニール処理を行なった。
実施例39〜48と同様に、表面を研磨して平坦にした10mm×10mm、厚み1mmの金属板11(ここではNi板を使用)上に、50nmのBT固溶体多結晶膜12を形成し、800℃でアニール処理を行なった。
10mm×10mm、厚み1mmの金属板11(ここではPt板を使用)上に、実施例1〜38と同様の方法でBT固溶体多結晶膜12を形成した。ただし、比較例1ではBaTiO3多結晶膜の膜厚は実施例の膜厚と同じにした。その後、実施例と同様にアニールを施し、上部電極となるPtの金属膜15を形成し、比誘電率の測定を行なった。
その結果、BaTiO3多結晶膜のみで、BaTiO3−KNbO3の界面を持たない場合は、表1に示すように比誘電率は523と、実施例と比べて低い値となっている。
比較例1と同様にして、膜厚50nmのKNbO3多結晶膜を形成し、アニールし、上部電極となるPtの金属膜15を形成し、比誘電率の測定を行なった。
その結果、KNbO3多結晶膜のみで、KNbO3−BaTiO3の界面を持たない場合は、表1に示すように比誘電率は411と、実施例と比べて低い値となっている。
10mm×10mm、厚み1mmの金属板11(ここではPt板を使用)上に、実施例1〜38と同様にして、表1に示した組成比となるように、薄膜誘電体22を形成し、評価用上部電極となるPtの金属膜15を形成して、比誘電率の測定を行なった。
その結果、表1に示すように、BaTiO3のBaの50モル%をSr、Caで、Tiの90モル%をZr、Hfで置換すると比誘電率が1000以下まで低下した。また、BaTiO3固溶体のBaとTiの比(A/B比)αが0.53、1.18の場合においても、同様に比誘電率が低下して1000以下を示した。
10mm×10mm、厚み1mmの金属板11(ここではPt板を使用)上に、実施例49〜58と同様の方法でBT固溶体多結晶膜12を形成した。その後、ターゲットとしてKNbO3を用いて、PLD法で以下の条件にて100nmのKNbO3膜を形成した。
基板温度は常温、レーザーパワーは50mJ、導入ガスはO2雰囲気、圧力1.33×10−3Pa。
また、KNbO3膜を形成後、ターゲットとしてBaTiO3を用い、KNbO3膜と同様の条件にて100nmのBaTiO3膜を形成した。さらにKNbO3膜とBaTiO3膜を交互に形成して、合計1μmの膜を形成した。
成膜後、酸素雰囲気中で800℃、1分の熱処理を行った後、上部電極となるPtの金属膜15を形成し、比誘電率の測定を行なうとともに、TEMにてそれぞれの界面でヘテロ接合を有する層がないことを確認した。その結果、BaTiO3−KNbO3のヘテロ接合を有する層を持たない場合は、表1に示すように比誘電率は492と、実施例のヘテロ接合を有する層を場合と比べて低い値となった。
12 BaTiO3をベースとしたペロブスカイト固溶体多結晶膜(BT固溶体多結晶膜)
13 KNbO3をベースとしたペロブスカイト固溶体膜(KN固溶体膜)
14 BaTiO3をベースとしたペロブスカイト固溶体膜(BT固溶体膜)
15 金属膜
21 複合誘電体層
22 薄膜誘電体
100 薄膜コンデンサ素子
Claims (4)
- (Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜(MはSr、Caの少なくとも1種、NはZr、Hfの少なくとも1種、0≦x≦0.4、0≦y≦0.6、0.7≦α≦1.0)上に、(Ba1−xMx)α(Ti1−yNy)O3膜(MはSr、Caの少なくとも1種、NはZr、Hfの少なくとも1種、0≦x≦0.4、0≦y≦0.6、0.7≦α≦1.0)と、(K1−wAw)β(Nb1−zTaz)O3膜(AはNa、Liの少なくとも1種、0≦w≦0.6、0≦z≦0.2、0.7≦β≦1.0)とが少なくともそれぞれ1層ずつ交互に形成されており、
前記(Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜上には、前記(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜が形成され、
前記(Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜と前記(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜と、および、前記(Ba 1−x M x ) α (Ti 1−y N y )O 3 膜と前記(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜と、がヘテロ接合を有する層を形成していることを特徴とする薄膜誘電体。 - (Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜(MはSr、Caの少なくとも1種、NはZr、Hfの少なくとも1種、0≦x≦0.4、0≦y≦0.6、0.7≦α≦1.0)上に、(Ba 1−x M x ) α (Ti 1−y N y )O 3 膜(MはSr、Caの少なくとも1種、NはZr、Hfの少なくとも1種、0≦x≦0.4、0≦y≦0.6、0.7≦α≦1.0)と、(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜(AはNa、Liの少なくとも1種、0≦w≦0.6、0≦z≦0.2、0.7≦β≦1.0)とが少なくともそれぞれ1層ずつ交互に形成されており、
前記(Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜上には、前記(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜が形成され、
前記(Ba 1−x M x ) α (Ti 1−y N y )O 3 多結晶膜と前記(K 1−w A w ) β (Nb 1−z Ta z )O 3 膜との界面、および、前記(Ba1−xMx)α(Ti1−yNy)O3膜と前記(K1−wAw)β(Nb1−zTaz)O3膜との界面で格子不整合による、格子定数が連続的に変化する結晶構造傾斜領域を有していることを特徴とする薄膜誘電体。 - 請求項1または2に記載の薄膜誘電体の両面に電極を形成したことを特徴とする薄膜コンデンサ素子。
- 請求項1または2に記載の薄膜誘電体の間に少なくとも1層以上の内部電極を設けたことを特徴とする薄膜コンデンサ素子。
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US11551867B2 (en) * | 2019-10-10 | 2023-01-10 | Maeda & Suzuki Patent Co., Ltd. | Dielectric composition, dielectric thin film, dielectric element, and electronic circuit board |
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US11133179B2 (en) | 2019-11-27 | 2021-09-28 | Samsung Electronics Co., Ltd. | Thin-film structure and method of manufacturing the same |
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JP7342752B2 (ja) * | 2020-03-18 | 2023-09-12 | Tdk株式会社 | 誘電体薄膜、誘電体素子および電子回路基板 |
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