WO2009037922A1 - 誘電体セラミック、及び積層セラミックコンデンサ - Google Patents

誘電体セラミック、及び積層セラミックコンデンサ Download PDF

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Publication number
WO2009037922A1
WO2009037922A1 PCT/JP2008/063587 JP2008063587W WO2009037922A1 WO 2009037922 A1 WO2009037922 A1 WO 2009037922A1 JP 2008063587 W JP2008063587 W JP 2008063587W WO 2009037922 A1 WO2009037922 A1 WO 2009037922A1
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Prior art keywords
dielectric
ceramic capacitor
laminated ceramic
dielectric ceramic
good
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PCT/JP2008/063587
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English (en)
French (fr)
Inventor
Takehisa Sasabayashi
Tomoyuki Nakamura
Masayuki Ishihara
Takayuki Yao
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Murata Manufacturing Co., Ltd.
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Priority to JP2007-242206 priority Critical
Priority to JP2007242206 priority
Application filed by Murata Manufacturing Co., Ltd. filed Critical Murata Manufacturing Co., Ltd.
Publication of WO2009037922A1 publication Critical patent/WO2009037922A1/ja

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    • H01G4/002Details
    • H01G4/018Dielectrics
    • H01G4/06Solid dielectrics
    • H01G4/08Inorganic dielectrics
    • H01G4/12Ceramic dielectrics
    • H01G4/1209Ceramic dielectrics characterised by the ceramic dielectric material
    • H01G4/1218Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
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Abstract

 本発明の誘電体セラミックは、BaTiO3系化合物を主成分とし、一般式:100AmBO3+aNiO+bROn+cMOv+dMgO+eXOw(ただし、RはDy等の希土類元素、MはMn等の金属元素、XはSiを含む焼結助剤成分)で表わされる。Niが結晶粒子内に均一固溶され、結晶粒子における希土類元素の固溶領域は、断面積比で平均10%以下である。0.96≦m≦1.030、0.05≦a≦3、0.1≦b≦1.5、0.1≦c≦1.0、0.1≦d≦1.5、0.05≦e≦3.5を満足する。積層セラミックコンデンサは、誘電体層1a~1gが上記誘電体セラミックで形成されている。これにより、良好なAC電圧特性を有する上に、所望の誘電特性と良好な温度特性を維持することができ、耐電圧性も良好で信頼性を確保することのできる誘電体セラミック、及び積層セラミックコンデンサを実現する。
PCT/JP2008/063587 2007-09-19 2008-07-29 誘電体セラミック、及び積層セラミックコンデンサ WO2009037922A1 (ja)

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WO2012165116A1 (ja) * 2011-06-02 2012-12-06 株式会社村田製作所 誘電体セラミック及び単板コンデンサ
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CN103889926A (zh) * 2011-11-01 2014-06-25 株式会社村田制作所 Ptc热敏电阻器及ptc热敏电阻器的制造方法
JP2013193955A (ja) * 2012-03-20 2013-09-30 Samsung Electro-Mechanics Co Ltd 誘電体組成物及びこれを含むセラミック電子部品
JP5696821B2 (ja) * 2013-03-19 2015-04-08 株式会社村田製作所 積層セラミックコンデンサ
WO2014167754A1 (ja) * 2013-04-08 2014-10-16 株式会社村田製作所 誘電体セラミック、及び積層セラミックコンデンサ
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JP2015180589A (ja) * 2014-03-04 2015-10-15 Tdk株式会社 誘電体組成物
JP2015180587A (ja) * 2014-03-04 2015-10-15 Tdk株式会社 誘電体組成物
JP2015180588A (ja) * 2014-03-04 2015-10-15 Tdk株式会社 誘電体組成物

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