한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제14권11호
  • /
  • Pages.879-884
  • /
  • 2001
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

Ca 치환에 따른 (Sr.Ca)$TiO_3$계 세라믹스의 구조적 및 유전 특성

Structural and Dielectric Properties of (Sr.Ca)$TiO_3$-based Ceramics with the Substitution of Ca

  • 최운식 (대불대학교 전기공학과) ;
  • 강재훈 (대불대학교 전기공학과) ;
  • 서용진 (대불대학교 전기공학과) ;
  • 김창일 (중앙대학교 전기전자공학부) ;
  • 김충혁 (광운대학교 전기공학과) ;
  • 박용필 (동신대학교 전기전자공학부)
  • 발행 : 2001.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, the structural and dielectric properties of (Sr$_{l-x}$Ca$_{x}$)TiO$_3$ (0$\leq$x$\leq$0.2) -based grain boundary layer ceramics were investigated by XRD, SEM and HP4194A. The ceramics were fabricated by the conventional mixed oxide method. The sintering temperature and time were 1420~152$0^{\circ}C$ and 4 hours, respectively. The average grain size and the lattice constant were decreased with increasing content of Ca. The average grain size was increased with increase of sintering temperature. The relative density of all specimens was 96~98%. The 2nd Phase formed by the thermal diffusion of CuO from the surface leads to very excellent dielectric properties, that is, $\varepsilon$$_{r}$>50000, tan $\delta$<0.05, $\Delta$C<$\pm$10%. The appropriate Ca content was under 15 ㏖%.s under 15 ㏖%.%.

키워드

참고문헌

  1. British Pat. v.861 G.V. Planer;R.M. Glaister
  2. Rev. Elect. Comm. Lab. v.15 no.9-10 Studies on the Boundary Layer Ceramic Capacitor S. Waku
  3. Rev. Elect. Comm. Lab. v.18 no.9-10 Study on the (Ba,Sr)TiO₃ Boundary Layer Ceramic Dielectrics S. Waku;M. Uchidata;K. Kiuchi
  4. J. Am. Ceram. Soc. v.103 no.3 The Effects of Additives for a (Sr,Ca)(Ti,Nb)O₃ Boundary Layer Capacitive-Varistor on the Microstructure and Electronic Properties Takahiro Takada(et al.)
  5. Journal of materials science Materials Electronics v.8 A TEM study of grain boundaries in internal boundary layer capacitors based on donor-doped(Sr,Ca)TiO₃ ceramics F. Poignant(et al.)
  6. J. Am. Ceram. Soc. v.78 no.1 Microstructure and Grain Boundary Structure of Na'-Diffused(Sr,Ca)TiO₃ Capacitor-Varistor Ceramics Qing Zou(et al.)
  7. J. Am. Ceram. Soc. v.64 no.12 Microstructure of SrTiO₃ Boundary-Layer Capacitor Material P.E.C. Franken(et al.)
  8. Jpn. J. Appl. Phys v.35 no.9B Effect of Firing Atmosphere on Densification of Serriconducting (Ba,Sr)TiO₃ Ceramics and Their Dielectric Properties and Varistor Characteristics Shinjiro Tashiro(et al.)
  9. Applied Physics Letters v.70 no.3 Dielectric properties of strained (Sr,Ca)TiO₃/(Ba,Sr)TiO₃ artificial lateices Tabata H.(et al.)
  10. J. Solid State Chem. v.68 The phase Diagram of CaTiO₃-SrTiO₃ M. Ceh;D. Kolar;L. Golic
  11. J. Solid State Chem. v.124 Vibrational Spectroscopy and X-ray Diffraction of Perovskite Compounds Sr-xMxTiO₃ (M=Ca,Mg:0≤x≤1) T. Hirata;K. Ishioke;M. Kitajima
  12. J. Am. Ceram. Soc. v.38 Structural Behavior in the system (Ba,Ca,Sr)TiO₃ and Its Relation to Certain Dielectric Characteristics M. Mcqurarrie
  13. Ceramic Dielectrics and Capacitors J.M. Herbert
  14. 전기전자재료학회지 v.8 no.5 (Sr₁-x · Cax)TiO₃ 입계층 세라믹의 유전 및 전기전도특성에 관한 연구 최운식;김충혁;이준웅
  15. 전기전자재료학회지 v.7 no.6 (Sr,Ca)TiO₃계 입계층 세라믹의 Ca 변화량에 따른 미세구조 및 유전특성 최운식;김충혁;이준웅
  16. 전기전자재료학회지 v.9 no.4 (Sr0.85Ca0.15)TiO₃ 입계층 세라믹의 열자격 전류특성에 관한 연구 김진사;김성열;유영각;최운식;이준웅
  17. 電子材料 v.11 複合機能素子 MFCと その 應用 山岡信立(外)