Electrical Properties of $(Ba,Sr)_{1-x}Y_xTiO_3$ with Variation of Yttrium Content

이트륨 혼입량 변화에 따른 $(Ba,Sr)_{1-x}Y_xTiO_3$의 전기적 특성

  • Noh, Taeyong (Research Institute for Basic Sciences and Department of Chemistry, Hanyang University) ;
  • Sung, Hyun Je (Research Institute for Basic Sciences and Department of Chemistry, Hanyang University) ;
  • Kim, Seungwon (Department of Chemical Engineering, Yosu National Fisheries University) ;
  • Lee, Chul (Research Institute for Basic Sciences and Department of Chemistry, Hanyang University)
  • 노태용 (한양대학교 기초과학연구소, 자연과학대학 화학과) ;
  • 성현제 (한양대학교 기초과학연구소, 자연과학대학 화학과) ;
  • 김승원 (여수수산대학교 화학공학과) ;
  • 이철 (한양대학교 기초과학연구소, 자연과학대학 화학과)
  • Published : 19951000

Abstract

The electrical properties for $(Ba,Sr)_{1-x}Y_xTiO_3$(x=0.001∼0.009, BSYT) with a positive temperature coefficient of resistivity(PTCR) effect were investigated. The BSYT powder was prepared by oxalate coprecipitation method. It was found that the large PTCR effect was appeared up to 0.3 mol% and decreased above 0.5 mol% of the yttrium concentration. The plot of temperature vs. $1{\varepsilon}$m(T) above Curie temperature($T_c$) was agreed with Curie-Weiss law. The potential barrier calculated from measured resistivity and dielectric constant of specimens was high up to 0.3 mol% and reduced above 0.5 mol% of yttrium concentration as the curve of PTCR effect.

Keywords

References

  1. Solid-State Electron. v.3 Heywang, W.
  2. Solid-State Electron. v.6 Jonker, G. H.
  3. J. Appl. Phys. v.67 Illingsworth, J.;Al-Allak, H. M.;Brinkman, A. W.;Woods, J.
  4. Standard Methods of Chemical Analysis Furman, N. H.
  5. Metallographic Etching Petzow, G.
  6. Elements of Materials Science and Engineering Van Vlack, L. H.
  7. J. Mater. Sci. Lett. v.7 Xue, L. A.;Chen, Y.;Brook, R. J.
  8. J. Am. Ceram. Soc. v.41 Peng, C. J.;Lu, H. Y.
  9. J. Am. Ceram. Soc. v.44 Saburi, O.
  10. J. Am. Ceram. Soc. v.46 Goodman, G.
  11. J. Phys. Soc. Jpn. v.14 Saburi, O.
  12. J. Mater. Sci. v.27 Issa, M. M. A.
  13. J. Am. Ceram. Soc. v.47 Heywang, W.
  14. Ceramic International v.11 Yamamura, H.;Watanabe, A.;Shirasaki, S.;Moriyoshi, Y.;Tanada, M.
  15. J. Am. Ceram. Soc. v.48 Schrey, F.
  16. German Pat v.929 Haayman, P. W.;Dam, R. W.;Klasens, H. A.
  17. J. Am. Ceram. Soc. v.75 Blanchart, P. J.;Baumard, F.;Abelard, P.
  18. J. Am. Ceram. Soc. v.68 Lewis, G. V.;Cathlow, C. R. A.;Casselton, R. E. W.
  19. J. Mater. Sci. v.6 Heywang, W.