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
Prior art date
Application number
PCT/JP2008/063587
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English (en)
French (fr)
Inventor
Takehisa Sasabayashi
Tomoyuki Nakamura
Masayuki Ishihara
Takayuki Yao
Original Assignee
Murata Manufacturing Co., Ltd.
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Publication date
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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    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
    • H01G4/12—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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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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US12/723,942 US7911764B2 (en) 2007-09-19 2010-03-15 Dielectric ceramics, and laminated ceramic capacitor

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JP2013079183A (ja) * 2011-10-04 2013-05-02 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
CN103889926B (zh) * 2011-11-01 2015-07-01 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
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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