JP4428509B2 - 圧電体の製造方法 - Google Patents
圧電体の製造方法 Download PDFInfo
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- JP4428509B2 JP4428509B2 JP2003569559A JP2003569559A JP4428509B2 JP 4428509 B2 JP4428509 B2 JP 4428509B2 JP 2003569559 A JP2003569559 A JP 2003569559A JP 2003569559 A JP2003569559 A JP 2003569559A JP 4428509 B2 JP4428509 B2 JP 4428509B2
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- piezoelectric body
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- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title description 5
- 239000013078 crystal Substances 0.000 claims description 56
- 238000004544 sputter deposition Methods 0.000 claims description 49
- 239000007789 gas Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 26
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- 229910052726 zirconium Inorganic materials 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 description 50
- 239000010936 titanium Substances 0.000 description 28
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 22
- 239000010408 film Substances 0.000 description 16
- 239000000203 mixture Substances 0.000 description 16
- 229910052745 lead Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 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
- 230000005684 electric field Effects 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910020684 PbZr Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 230000005469 synchrotron radiation Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 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
- 229910000464 lead oxide Inorganic materials 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
- -1 not limited thereto Chemical compound 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
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Description
子である第1の結晶格子と第2の結晶格子とを含み、上記第1の結晶格子では、ペロブスカイト型格子の頂点にPbが位置し、ペロブスカイト型格子の各面の中心に酸素が位置し、ペロブスカイト型格子の重心にZr又はTiが位置しており、上記第2の結晶格子では、ペロブスカイト型格子の頂点にPbが位置し、ペロブスカイト型格子の各面の中心に酸素が位置し、ペロブスカイト型格子の重心にPbが位置しており、上記圧電体において上記第1の結晶格子の数が全結晶格子数の70%以上97%以下であり、上記第2の結晶格子の数が全結晶格子数の3%以上30%以下であり、上記スパッタ時における上記基板の温度を400℃以上700℃以下に設定し、上記スパッタ時に使用するスパッタガスを、アルゴンと酸素との混合ガスとするとともに、該スパッタガスの酸素分圧を2%以上30%以下に設定し、上記スパッタガス圧力を0.01Pa以上3.0Pa以下に設定し、上記スパッタ時にターゲットに印加する高周波電力密度を1.0W/cm2 以上10W/cm2 以下に設定するようにする。
図1及び図2は、本発明の実施形態に係る圧電体3を備えた圧電素子を示し、この圧電素子は、基板1上に設けられた第1の電極2と、この第1の電極2上に設けられた上記圧電体3と、この圧電体3上に設けられた第2の電極4とを備えている。
0.47/(0.47+0.42)=0.53
となる。
加速度的に低下した。
電体(試料No.1〜No.5)を成膜した。この表1における試料No.1のものは、上記実施形態で説明したものと同じであり、試料No.5のものでは、スパッタガスの酸素分圧が50%であり、上記実施形態で説明した適切な範囲(2%以上10%以下)から外れる。
大き過ぎたために、Pb原子の活性度が低くてBサイトに導入されなかったからであると考えられる。
図5及び図6は、本発明の実施形態に係るインクジェットヘッドを示し、このインクジェットヘッドは、上記実施形態1で説明したものと同様の複数の圧電体13と、この各圧電体13の厚み方向両面にそれぞれ設けられた一対の第1及び第2の電極12,14(上記実施形態1で説明した第1及び第2の電極2,4と同様のもの)と、この一方の電極(第1の電極12)の上記圧電体13とは反対側の面(下面)に設けられた振動板15と、この振動板15の上記第1の電極12とは反対側の面(下面)に接合され、インクを収容する圧力室20を構成するための圧力室部材16とを備えている。尚、この実施形態では、上記複数の圧電体13は、1インチ当たり200個設けられている。
振動板15を所定の形状に仕上げる。
図7は、本発明の実施形態に係るインクジェット式記録装置を示し、このインクジェット式記録装置は、上記実施形態2と同様のインクジェットヘッド28を備えている。このインクジェットヘッド28において圧力室(上記実施形態2における圧力室20)に連通するように設けたノズル孔(上記実施形態2におけるノズル孔23)から該圧力室内のインクを記録媒体29(記録紙等)に吐出させて記録を行うように構成されている。
2 第1の電極
3 圧電体
4 第2の電極
12 第1の電極
13 圧電体
14 第2の電極
15 振動板
16 圧力室部材
20 圧力室
23 ノズル孔
28 インクジェットヘッド
29 記録媒体
Claims (4)
- 圧電体を基板上にスパッタ法により成膜して製造する圧電体の製造方法であって、
上記圧電体は、いずれもペロブスカイト型格子である第1の結晶格子と第2の結晶格子とを含み、
上記第1の結晶格子では、ペロブスカイト型格子の頂点にPbが位置し、ペロブスカイト型格子の各面の中心に酸素が位置し、ペロブスカイト型格子の重心にZr又はTiが位置しており、
上記第2の結晶格子では、ペロブスカイト型格子の頂点にPbが位置し、ペロブスカイト型格子の各面の中心に酸素が位置し、ペロブスカイト型格子の重心にPbが位置しており、
上記圧電体において上記第1の結晶格子の数が全結晶格子数の70%以上97%以下であり、上記第2の結晶格子の数が全結晶格子数の3%以上30%以下であり、
上記スパッタ時における上記基板の温度を400℃以上700℃以下に設定し、
上記スパッタ時に使用するスパッタガスを、アルゴンと酸素との混合ガスとするとともに、該スパッタガスの酸素分圧を2%以上30%以下に設定し、
上記スパッタガス圧力を0.01Pa以上3.0Pa以下に設定し、
上記スパッタ時にターゲットに印加する高周波電力密度を1.0W/cm2 以上10W/cm2 以下に設定することを特徴とする圧電体の製造方法。 - スパッタガス圧力を0.01Pa以上1.0Pa以下に設定することを特徴とする請求項1記載の圧電体の製造方法。
- スパッタガスの酸素分圧を2%以上10%以下に設定することを特徴とする請求項1記載の圧電体の製造方法。
- スパッタ時にターゲットに印加する高周波電力密度を2.5W/cm2 以上10W/cm2 以下に設定することを特徴とする請求項1記載の圧電体の製造方法。
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