JP6075144B2 - LaNiO3薄膜形成用組成物及びこの組成物を用いたLaNiO3薄膜の形成方法 - Google Patents
LaNiO3薄膜形成用組成物及びこの組成物を用いたLaNiO3薄膜の形成方法 Download PDFInfo
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- JP6075144B2 JP6075144B2 JP2013061914A JP2013061914A JP6075144B2 JP 6075144 B2 JP6075144 B2 JP 6075144B2 JP 2013061914 A JP2013061914 A JP 2013061914A JP 2013061914 A JP2013061914 A JP 2013061914A JP 6075144 B2 JP6075144 B2 JP 6075144B2
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- 239000000203 mixture Substances 0.000 title claims description 79
- 239000010409 thin film Substances 0.000 title claims description 74
- 238000000034 method Methods 0.000 title claims description 43
- 229910002340 LaNiO3 Inorganic materials 0.000 title description 3
- 241000877463 Lanio Species 0.000 claims description 126
- 239000002243 precursor Substances 0.000 claims description 66
- 239000010408 film Substances 0.000 claims description 54
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 43
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 31
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- 239000003990 capacitor Substances 0.000 claims description 28
- 238000000576 coating method Methods 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000001354 calcination Methods 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 19
- 239000012298 atmosphere Substances 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 150000007942 carboxylates Chemical class 0.000 claims description 6
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910001960 metal nitrate Inorganic materials 0.000 claims description 6
- 150000004703 alkoxides Chemical class 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 150000002009 diols Chemical class 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 4
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 3
- 150000002823 nitrates Chemical class 0.000 claims description 3
- 159000000021 acetate salts Chemical class 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 17
- 239000013078 crystal Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 12
- 238000010304 firing Methods 0.000 description 12
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- SORGMJIXNUWMMR-UHFFFAOYSA-N lanthanum(3+);propan-2-olate Chemical compound [La+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SORGMJIXNUWMMR-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- BMGNSKKZFQMGDH-FDGPNNRMSA-L nickel(2+);(z)-4-oxopent-2-en-2-olate Chemical compound [Ni+2].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O BMGNSKKZFQMGDH-FDGPNNRMSA-L 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000011085 pressure filtration Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- GJKFIJKSBFYMQK-UHFFFAOYSA-N lanthanum(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GJKFIJKSBFYMQK-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229940078487 nickel acetate tetrahydrate Drugs 0.000 description 2
- OINIXPNQKAZCRL-UHFFFAOYSA-L nickel(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Ni+2].CC([O-])=O.CC([O-])=O OINIXPNQKAZCRL-UHFFFAOYSA-L 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
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- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- PPNFILUQDVDXDA-UHFFFAOYSA-K 2-ethylhexanoate;lanthanum(3+) Chemical compound [La+3].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O PPNFILUQDVDXDA-UHFFFAOYSA-K 0.000 description 1
- UVPKUTPZWFHAHY-UHFFFAOYSA-L 2-ethylhexanoate;nickel(2+) Chemical compound [Ni+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O UVPKUTPZWFHAHY-UHFFFAOYSA-L 0.000 description 1
- BWLBGMIXKSTLSX-UHFFFAOYSA-N 2-hydroxyisobutyric acid Chemical compound CC(C)(O)C(O)=O BWLBGMIXKSTLSX-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 238000000224 chemical solution deposition Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 description 1
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- ATHHXGZTWNVVOU-VQEHIDDOSA-N n-methylformamide Chemical class CN[13CH]=O ATHHXGZTWNVVOU-VQEHIDDOSA-N 0.000 description 1
- 229940078494 nickel acetate Drugs 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Description
先ず、LaとNiの金属原子比が1:1となるように、LaNiO3前駆体として酢酸ニッケル四水和物(Ni源)、及び硝酸ランタン六水和物(La源)をそれぞれ秤量した。また、安定化剤として、上記前駆体1モルに対して5モルとなる量のN−メチルホルムアミドを用意した。次に、上記前駆体とN−メチルホルムアミドと、更に溶媒である酢酸とを、調製後の組成物中に占める上記前駆体の濃度が酸化物換算で4質量%の濃度になるように反応容器内に投入して、固形分が完全に溶解するまで攪拌することにより組成物を調製した。調製後、メンブランフィルタと加圧タンクを組み合せた加圧濾過法にて濾過を行った。
塗膜の形成から仮焼までの工程を5回繰り返し行った後、焼成を1回行うことにより所望の総厚に形成したこと以外は、実施例1−1と同様にして組成物を調製し、LaNiO3薄膜を形成した。
先ず、LaとNiの金属原子比が1:1となるように、LaNiO3前駆体として酢酸ニッケル四水和物(Ni源)、及び硝酸ランタン六水和物(La源)をそれぞれ秤量した。また、安定化剤として、上記前駆体1モルに対して5モルとなる量のN−メチルホルムアミドを用意した。次に、上記前駆体とN−メチルホルムアミドと、更に溶媒である酢酸とを、調製後の組成物中に含まれる上記前駆体の濃度が酸化物換算で4質量%の濃度になるように反応容器内に投入し、固形分が完全に溶解するまで攪拌した。そして、窒素雰囲気中、140℃の温度で30分間加熱することにより組成物を調製した。調製後、メンブランフィルタと加圧タンクを組み合せた加圧濾過法にて濾過を行った。
以下の表1に示すように、各成分の割合を調整して組成物中の酸化物換算での前駆体濃度を変更したこと以外は、実施例1−1と同様にして組成物を調製し、LaNiO3薄膜を形成した。
以下の表1に示すように、安定化剤であるN−メチルホルムアミドの前駆体1モルに対する割合を変更したこと以外は、実施例1−1と同様にして組成物を調製し、LaNiO3薄膜を形成した。なお、比較例2−1では、N−メチルホルムアミドの前駆体1モルに対する割合を0、即ち安定化剤を添加せずに組成物を調製した。
以下の表1に示すように、LaNiO3前駆体として、酢酸塩及び硝酸塩以外のランタンイソプロポキシド(La源)及びニッケルアセチルアセトネート(Ni源)を使用したこと、及び撹拌した後、実施例1−3と同じ条件で加熱を行ったこと以外は、実施例1−1と同様にして組成物を調製し、LaNiO3薄膜を形成した。
実施例1−1〜実施例3及び比較例1−1〜比較例2−2で得られたLaNiO3薄膜の膜厚、表面抵抗値、優先配向面を評価した。それらの結果を以下の表1に示す。
また、実施例2−1、2−2と比較例2−1,2−2を比較すると、安定化剤としてN−メチルホルムアミドを添加していない比較例2−1では、形成したLaNiO3薄膜に目視で確認できる程のクラックが発生し、均一な膜が形成できなかったことから、膜評価を行うことができなかった。また、N−メチルホルムアミドの割合が組成物中のLaNiO3前駆体の合計量1モルに対して10モルを超える比較例2−2では、形成したLaNiO3薄膜に目視で確認できる程のボイドが発生し、均一な膜が形成できなかったことから、膜評価を行うことができなかった。これに対し、N−メチルホルムアミドをLaNiO3前駆体の合計量1モルに対して10モル以下で添加した実施例2−1、2−2では、クラックやボイド等を発生させずに、表面抵抗率が低く、(100)面に優先配向するLaNiO3薄膜が得られた。また、LaNiO3前駆体として、ランタンイソプロポキシド及びニッケルアセチルアセトネートを使用した実施例3においても、実施例1−1〜実施例2−2と同様、表面抵抗率が低く、(100)面に優先配向するLaNiO3薄膜が得られた。
Claims (6)
- LaNiO3薄膜を形成するための組成物において、
前記組成物が、LaNiO3前駆体と、溶媒成分として酢酸を含む一方、溶媒成分として水を含まず、
前記組成物100質量%中の前記LaNiO3前駆体の割合が酸化物換算で1〜20質量%であり、
前記組成物中のLaNiO3前駆体の合計量1モルに対して1モル以上10モル以下のN−メチルホルムアミドからなる安定化剤を更に含むことを特徴とするLaNiO3薄膜形成用組成物。 - 前記LaNiO3前駆体が金属カルボン酸塩、金属硝酸塩、金属アルコキシド、金属ジオール錯体、金属トリオール錯体、金属β−ジケトネート錯体、金属β−ジケトエステル錯体、金属β−イミノケト錯体又は金属アミノ錯体である請求項1記載のLaNiO3薄膜形成用組成物。
- 前記LaNiO3前駆体のうち、La源となるLaNiO3前駆体又はNi源となるLaNiO3前駆体の少なくとも一方が酢酸塩又は硝酸塩である請求項2記載のLaNiO3薄膜形成用組成物。
- 請求項1ないし3いずれか1項に記載のLaNiO3薄膜形成用組成物を用いたLaNiO3薄膜の形成方法。
- (100)面に優先配向するLaNiO3薄膜の形成方法であって、
請求項1ないし3いずれか1項に記載のLaNiO3薄膜形成用組成物を耐熱性基板に塗布して塗膜を形成し、前記塗膜を有する基板を大気圧の酸化雰囲気又は含水蒸気雰囲気中で仮焼した後、或いは所望の厚さになるまで前記塗膜の形成から仮焼までを2回以上繰り返した後、結晶化温度以上の温度で焼成することを特徴とするLaNiO3薄膜の形成方法。 - 請求項4又は5記載の方法により形成されたLaNiO3薄膜を有する薄膜コンデンサ、キャパシタ、IPD、DRAMメモリ用コンデンサ、積層コンデンサ、強誘電体メモリ用コンデンサ、焦電型赤外線検出素子、圧電素子、電気光学素子、アクチュエータ、共振子、超音波モータ、電気スイッチ、光学スイッチ又はLCノイズフィルタ素子の複合電子部品を製造する方法。
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TW103105481A TW201500291A (zh) | 2013-03-25 | 2014-02-19 | LaNiO薄膜形成用組成物及使用該組成物之LaNiO薄膜的形成方法 |
US14/183,703 US20140287136A1 (en) | 2013-03-25 | 2014-02-19 | LaNiO3 THIN FILM-FORMING COMPOSITION AND METHOD OF FORMING LaNiO3 THIN FILM USING THE SAME |
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