JPWO2008075525A1 - 誘電体セラミックおよび積層セラミックコンデンサ - Google Patents
誘電体セラミックおよび積層セラミックコンデンサ Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 69
- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 32
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 24
- 230000015556 catabolic process Effects 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 230000005684 electric field Effects 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
- 229910052693 Europium Inorganic materials 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052689 Holmium Inorganic materials 0.000 claims description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- 229910052771 Terbium Inorganic materials 0.000 claims description 3
- 229910052775 Thulium Inorganic materials 0.000 claims description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 55
- 239000002002 slurry Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- 239000007858 starting material Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 carbonate compound Chemical class 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
Description
2 積層体
3 誘電体セラミック層
4,5 内部電極
8,9 外部電極
まず、主成分の出発原料として、固相法によって合成したBamTiO3粉末およびCamTiO3粉末を用意した。また、副成分の出発原料として、Y2O3、La2O3、CeO2、Pr6O11,Nd2O3、Sm2O3、Eu2O3、Gd2O3、Tb2O3、Ho2O3、Er2O3、Tm2O3、Yb2O3およびLu2O3といった希土類元素の酸化物粉末を用意するとともに、MgO、MnOおよびSiO2の各粉末を用意した。
実験例2は、実験例1における各試料と同じ組成としながら、出発原料の混合方法を変更した場合について実験したものである。すなわち、実験例2において作製した試料101〜147は、それぞれ、実験例1における試料1〜47と同じ組成である。
実験例3は、実験例1における各試料と同じ組成としながら、出発原料の混合方法を実験例2とはさらに別の方法に変更した場合について実験したものである。実験例3において作製した試料201〜247は、それぞれ、実験例1における試料1〜47と同じ組成である。
Claims (5)
- (Ba1−xCax)mTiO3(0.30≦x≦0.50、0.950≦m≦1.025)を主成分とする、誘電体セラミック。
- さらに、Y、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、YbおよびLuから選ばれる少なくとも1種の希土類元素を、前記主成分100モル部に対して、1〜14モル部含む、請求項1に記載の誘電体セラミック。
- さらに、Mn、MgおよびSiを、それぞれ、前記主成分100モル部に対して、0.1〜3.0モル部、0.5〜5.0モル部および1.0〜5.0モル部含む、請求項1または2に記載の誘電体セラミック。
- 積層された複数の誘電体セラミック層および前記誘電体セラミック層間の特定の界面に沿って形成された内部電極を含む積層体と、
前記内部電極の特定のものに電気的に接続されるように前記積層体の外表面上に形成された外部電極と
を備え、
前記誘電体セラミック層は請求項1ないし3のいずれかに記載の誘電体セラミックからなり、
前記内部電極はNiを主成分とする、
積層セラミックコンデンサ。 - 使用電界が25〜100kV/mmであり、保証絶縁破壊電圧が90kV/mmより大きい、請求項4に記載の積層セラミックコンデンサ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008550070A JP5307554B2 (ja) | 2006-12-21 | 2007-11-21 | 積層セラミックコンデンサ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006343809 | 2006-12-21 | ||
JP2006343809 | 2006-12-21 | ||
JP2008550070A JP5307554B2 (ja) | 2006-12-21 | 2007-11-21 | 積層セラミックコンデンサ |
PCT/JP2007/072509 WO2008075525A1 (ja) | 2006-12-21 | 2007-11-21 | 誘電体セラミックおよび積層セラミックコンデンサ |
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US20130188292A1 (en) * | 2011-07-29 | 2013-07-25 | Keisuke Kobayashi | Ceramic composition and a laminated ceramic electronic component including the same thereof |
KR101444616B1 (ko) * | 2013-08-14 | 2014-09-26 | 삼성전기주식회사 | 적층 세라믹 커패시터, 그 제조 방법 및 적층 세라믹 커패시터용 압착 플레이트 |
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JP2001139370A (ja) * | 1999-11-11 | 2001-05-22 | Murata Mfg Co Ltd | 誘電体セラミック、セラミックコンデンサおよびセラミック発振子 |
JP2002029836A (ja) * | 2000-07-05 | 2002-01-29 | Samsung Electro Mech Co Ltd | 誘電体セラミック組成物及びこれを用いた積層セラミックキャパシター並びにその製造方法 |
JP2005335960A (ja) * | 2003-07-07 | 2005-12-08 | Murata Mfg Co Ltd | 誘電体セラミック組成物及び積層セラミックコンデンサ |
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JP4446324B2 (ja) * | 2001-09-27 | 2010-04-07 | 株式会社村田製作所 | 誘電体磁器組成物及びそれを用いたコンデンサ |
KR100568286B1 (ko) * | 2003-12-22 | 2006-04-05 | 삼성전기주식회사 | 유전체 세라믹 분말에 첨가제를 분산, 코팅하는 방법 |
US7268643B2 (en) * | 2004-01-28 | 2007-09-11 | Paratek Microwave, Inc. | Apparatus, system and method capable of radio frequency switching using tunable dielectric capacitors |
US20060136181A1 (en) * | 2004-12-22 | 2006-06-22 | John Masse | Method and system for optimising at least one parameter characteristic of a physical system that is to be subjected to variable external conditions |
JP4622537B2 (ja) * | 2005-01-20 | 2011-02-02 | Tdk株式会社 | 誘電体磁器組成物および電子部品 |
US7869186B2 (en) * | 2005-11-14 | 2011-01-11 | Paratek Microwave, Inc. | High Q and low stress capacitor electrode array |
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- 2007-11-21 JP JP2008550070A patent/JP5307554B2/ja active Active
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JP2001139370A (ja) * | 1999-11-11 | 2001-05-22 | Murata Mfg Co Ltd | 誘電体セラミック、セラミックコンデンサおよびセラミック発振子 |
JP2002029836A (ja) * | 2000-07-05 | 2002-01-29 | Samsung Electro Mech Co Ltd | 誘電体セラミック組成物及びこれを用いた積層セラミックキャパシター並びにその製造方法 |
JP2005335960A (ja) * | 2003-07-07 | 2005-12-08 | Murata Mfg Co Ltd | 誘電体セラミック組成物及び積層セラミックコンデンサ |
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TWI452586B (zh) | 2014-09-11 |
TW200847203A (en) | 2008-12-01 |
JP5307554B2 (ja) | 2013-10-02 |
WO2008075525A1 (ja) | 2008-06-26 |
US20090244805A1 (en) | 2009-10-01 |
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