Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Electrical Properties of Low-Temperature Sintered BaTiO3 Added with Lead Germanate

Lead Germanate를 첨가하여 저온소결한 반도성 BaTiO3의 전기적 성질

  • 윤상옥 (강릉대학교 재료공학과) ;
  • 정형진 (한국과학기술연구원 세라믹스부) ;
  • 윤기현 (연세대학교 요업공학과)
  • Published : 1991.06.01
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Abstract

Electrical properties of 0.15 mol% Y2O3 doped semiconducting BaTiO3 ceramics have been investigated as functions of Pb5Ge3O11 contents (from 0.25 mol% to 2.5 mol%) and sintering temperatures (from 1150$^{\circ}C$ to 1300$^{\circ}C$). The low-temperature sintered BaTiO3 ceramics above 1150$^{\circ}C$ show increase of Curie temperature due to the diffusion of Pb+2 ions, and their PTCR effects decrease. As the sintering temperature increases the room temperature resistance decreases due to the growth of the grain, but the room temperature resistance increases with the increase of the Pb5Ge3O11 contents by the formation of thick insulating layers at the grain boundary.

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References

  1. J. Phys Soc. Jpn v.20 no.4 Oxidation Phenomena in Semiconductiong BaTiO₃ I. Ueda;Ikegami
  2. Philips Res. Rep v.5 no.6 Controlled Valancy Semiconductors E.J.W. Verwey;P.W. Haaijman(et al.)
  3. J. Am. Ceram Soc. v.44 no.2 Properties of Semiconductive Barium Titanates O. Saburi
  4. J. Am. Ceram. Sco. v.55 no.2 PTCR Behavior of BaTiO₃ and MnO₂ Additives Y. Matsuo;M. Fujimura;H. Sasaki(et al.)
  5. Am. Ceram. Soc. Bull. v.54 no.9 Exaggerated Grain Growth in Liquid Phase Sintering of BaTiO₃ Y. Matsuo;H. Sasaki
  6. Am. Ceram. Soc. Bull. v.63 no.2 Electrical Properties of Semiconducting BaTiO₃ by Liquid Phase Sintering W.Y. Howng;C. McCutchon
  7. US Patent v.4 no.384 Semiconductive Barium Titanate S. Kamigaito;T Hioki(et al.)
  8. J. Kor. Ceram. Soc.(in print) Low-Temperature Sinterbility of Semiconducting BaTioO₃ Ceramics with Pb₃Ge₃$O_11$ Additives S.O. Yoon;K.H. Yoon;H.J. Jung
  9. J Electrochem Soc. v.107 no.250 Ohmic Contacts to Semiconducting Ceramics D.R. Turner;H.A. Sauer
  10. Solid State Comm. v.64 no.4 Contact Resistance of the Electrodes on Semiconducting Ceramics S.O. Yoon;H.J. Jung;K.H. Yoon
  11. Mat Res Bull. v.21 no.12 Influence of Synthesis Methods of the PTCR Effect in Semiconductive BaTiO₃ K.H. Yoon;K.Y. Oh;S.O. Yoon
  12. J. Appl. Phys. Jpn. v.6 no.4 On the Phase Transition in Barium Lead Titanate G. Shirane and K. Suzuki
  13. High Tech. Ceramics PTCR Effect in Semiconductive BaTiO₃Prepared in Molten KCI K.H. Yoon;E.H. Lee;P. Vincenzini
  14. Advances in Ceramics v.7 Grain Boundary Effect in Highly Resistive SiC Ceramics with High Thermal Conductivity K. Maeda;T. Miyoshi;Y. Takeda(et al.);M.F. Yan(ed.)
  15. Solid Sate Electron. v.7 no.895 Some Aspects of Semiconducting Barium Titanate G.H. Jonker
  16. J. Am. Ceram. Soc. v.64 no.11 Effect of Microstructure on the PTCR Effect in Semiconducting Barium Titanate Ceramics M. Kuwabara
  17. Advancer in ceramics v.7 PTCR Effect in Porous Barium Titanate Ceramics M. Kuwabara;M.F. Yan(ed.)
  18. J. Kor. Ceram. Soc. v.24 no.1 Effcet of MoO₃ Addition and Their Frequency Chaeacteristics in $Nb^{+5}$ Doped Semiconductive BaTiO₃ Ceramics S.O Yoon;H.J. Jung;K.H. Yoon