Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Additives on Dielectric Properties and Microstructure of MLCC X7R Composition

첨가물의 형태가 MLCC X7R 조성의 유전 특성 및 미세구조에 미치는 영향

  • 문환 (삼화콘덴서 공업주식회사 부설연구소) ;
  • 김민기 (삼화콘덴서 공업주식회사 부설연구소) ;
  • 전현표 (삼화콘덴서 공업주식회사 부설연구소) ;
  • 안재평 (한국과학기술연구원 나노재료연구센터) ;
  • 윤중락 (삼화콘덴서 공업주식회사 부설연구소) ;
  • 정태석 (삼화콘덴서 공업주식회사 부설연구소)
  • Published : 2003.07.01
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Abstract

Effects of additives on electrical properties and microstructure of MLCC X7R dielectrics have been investigated. The additives of glass frit or oxide form were added in the same main composition by the different powder processing conditions. As a result of the dielectric property and microstructure analysis, the composition having the glass layer with dopant concentration gradient showed the excellent dielectric properties. The MLCCs were fabricated with the excellent composition and all dielectric properties satisfied the X7R requirements.

첨가물의 형태가 X7R용 MLCC 유전 원료의 전기적 특성 및 미세구조에 미치는 영향을 평가하였다. Glass frit 및 산화물 형태로 제조된 첨가물을 분말 공정 조건을 달리하여 동일한 주조성에 첨가하였다. 미세구조 및 유전특성을 측정한 결과, glass 층에 dopant의 농도 구배가 존재하는 조성이 유전 특성이 가장 우수하였다. 최적 조성을 MLCC로 제작하여 유전 특성을 측정하였으며, X7R 제반 조건을 만족하였다.

Keywords

References

  1. Introduction to Ceramics(2nd edition) W.D.Kingery;H.K.Bowen;D.R.Uhlmann
  2. J. Eur. Ceram. Soc. v.21 Dielectric Materials for Sintering in Reducing Atmospheres D.F.K.Hennings https://doi.org/10.1016/S0955-2219(01)00082-6
  3. Key Eng. Mater. v.157;158 A Study on Capacitance Aging in Ni-electroded BaTiO₃-based MLCC with X7R Characteristics S.Sato;A.Sato;J.Miura;N.Kawano;T.Arashi;T.Nomura
  4. Key Eng. Mater. v.157;158 Effects of the Microstructure on Dielectric Properties for BaTiO₃-based MLC with Ni Electrode Y.Okino;N.Kohzu;Y.Mizuno;M.Honda;H.Chazono;H.Kishi
  5. J. Eur. Ceram. Soc. v.19 The Effect of Rara-earth (La, Sm, Dy, Ho, and Er) and Mg on the Microstructure in BaTiO₃ H.Kishi;N.Kohzu;J.Sugino;H.Ohsato;Y.Iguchi;T.Okuda https://doi.org/10.1016/S0955-2219(98)00370-7
  6. Key Eng. Mater. v.181;182 Microstructure Control of BaTiO₃-based Ceremics by the Composition H.Konaka;H.Sano;T.Konoike;K.Tomono
  7. Jpn. J. Appl. Phys. v.33 Dielectric Properties of Rare-earth Oxide Doped BaTiO₃Ceramics Fired in Reducing Atmosphere T.Okino;H.Shizuno;S.Kusumi;H.Kishi https://doi.org/10.1143/JJAP.33.5393
  8. J. Eur. Ceram. Soc. v.19 Mechanism of Improvement of Resistance Degradation in Y-doped BaTiO₃Based MLCCs with Ni Electrodes under Highly Accelerated Life Test S.Sato;Y.Nakano;A.Sato;T.Nomura https://doi.org/10.1016/S0955-2219(98)00374-4
  9. Mat. Lett. v.44 Modulation Effect of $Mn^{2+}$ on Dielectric Properties of BaTiO₃-based X7R Materials T.Li;L.Li;J.Zhao;Z.Gui https://doi.org/10.1016/S0167-577X(99)00285-2
  10. J. Eur. Ceram. Soc. v.21 Improvement of Temperature-stable BaTiO₃-based Dielectrics by Addition of Li₂CO ₃ and CO₂O₃ Q.Li;J.Qi;Y. Wang;Z. Gui;L. Li https://doi.org/10.1016/S0955-2219(01)00194-7
  11. J. Kor. Ceram. Soc. v.36 no.9 Dielectric Properties of BaTiO₃Ceramics Having Abnormally Grown Grains J.M.Cho;B.H.Kim;B.K.Kim;H.J.Jae;H.W.Lee
  12. J. Kor. Ceram. Soc. v.40 no.1 Effects of A-site Ca and B-site Zr Substitution on the Dielectric Characteristics and Micro-structure of BaTiO₃-CaTiO₃Composite M.S.Yoon;Y.M.Park https://doi.org/10.4191/KCERS.2003.40.1.037
  13. J. Eur. Ceram. Soc. v.19 Dependence of the Structural and Dielectric Properties of $Ba_{1-x}Sr_{x}TiO_{3}$ Ceramic Solid Solutions on Raw Materials Processing L.Zhou;P.M.Vilarinho;J.L.Baptista https://doi.org/10.1016/S0955-2219(99)00010-2
  14. J. Eur. Ceram. Soc. v.21 Effect of Milling Process on Core-shell Microstructure and Electrical Properties for BaTiO₃-based Ni-MLCC Y.Mizuno;T.Hagiwara;H.Chazono;H.Koshi https://doi.org/10.1016/S0955-2219(01)00084-X
  15. J. Kor. Ceram. Soc. v.32 no.2 Abnormal Grain Growth Behaviors of BaTiO₃Ceramics with Controlling of Particle Size Distribution of Calcined Powder T.H.Lee;J.J.Kim;N.K.Kim;S.H.Cho
  16. J. Kor. Ceram. Soc. v.39 no.1 Effect of Abnormal Grain Growth and Heat Treatment on Electrical Properties of Semiconducting BaTiO₃ Ceramics J. H. Lee;S. H. Cho https://doi.org/10.4191/KCERS.2002.39.1.021
  17. Jpn. J. Appl. Phys. v.41 Effect of Ho/Mg Ratio on Formation of Core-shell Structure in BaTiO₃ and on Dielectric Properties of BaTiO₃ Ceramics A.Kirianov;T.Hagiwara;H.Kishi;H.Ohsata https://doi.org/10.1143/JJAP.41.6934

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