A Study of PTCR Effects in Semiconducting BaTiO3 Prepared by Direct Wet Process

습식 직접합성법에 의한 반도성 BaTiO3의 PTCR 효과에 관한 연구

  • Published : 1987.02.01

Abstract

By the method of direct wet process which has been developed in our laboratory, the high purity BaTiO3 powders could be synthesized from the room temperature to 90$^{\circ}C$ according to particle sizes. For to detect the PTCR effects, Sb2O3 wasdoped in the BaTiO3 powders which had been prepared on above method. As the results, the PTCR effects were in creased with the decreasing grain size of BaTiO3 powders.

Keywords

References

  1. Electronic Applications v.26 no.3 Properties and Applications of PTC Thermistors E. Andrich
  2. Philips Tech. Rev. v.26 Investigation BaTiO₃semiconductors E. Amdrich;K.H. Hardtl
  3. Am. Ceram. Soc. Bull. v.45 no.2 Yttrium Doped Ferroelectric Solid Solutions with Positive Temperature Coefficients of Resistance Y. Ichikawa;W.G. Garlson
  4. J. Am. Cer. Soc v.44 no.4 Investigation of Rare-Earth Doped Cofficient Thermisters V.J. Thennery;R.L. Cook
  5. J. Am. Cer. Soc v.44 no.5 Possible Explanation of Positive Temperature Coefficient in Resistivity of Semiconducting Ferroelectrics W.T. Peria;W.R. Bratschun;R.D. Fenity
  6. J. Am. Cer. Soc. v.47 no.10 Resistivity Anomaly of S-emiconducting Barium Titanate W. Heywang
  7. Sol. State Electr v.7 Some Aspects of Semiconducting Barium Titante G.H. Jonker
  8. Am. Ceram. Soc. Bull. v.50 no.8 Effect of Heat-Treatment on the PTCR Anomaly in Semiconducting Barium Titanate M. Kahn
  9. J. Am. Ceram. Soc. v.64 no.2 Influence of stoichiometry on the PTCR Effects in Porous Barium Titante Ceramics M. Kuwabara
  10. Yogyo-Kyokai-Shi v.90 no.8 Some Factors Affecting the Magnitude of the PTCR Effects in Semiconducting Barium Titante M. Kuwabara
  11. 요업학회지 v.21 no.4 BaTiO₃의 습식 직접합성법(Ⅰ) 이경희;이병하;이희승
  12. 新實驗化學講坐 無機化合の 合成(II) 日本化學會(編)
  13. J. Ellectrochem. Soc. v.107 no.3 Ohmic Contact to Semiconducting Ceramics P.R. Turner;H.A. Sauer
  14. 요업학회지 v.23 no.3 용융염 합성법에 의한 반도성 BaTiO₃의 PTCP 효과 윤기현;오기영
  15. Am. Ceram. Soc. Bull. v.56 no.3 Effects of Impurities and Pores in Grain Boundary Mobility M. F. Yan;R.M. Cannon;U. Chowdhry;H.K. Bowen
  16. Unpubished Report Effects of Grain Sizes Distribution on Sintered Density M. F. Yan;R.M. Cannon;U. Chowdhry;H.K. Bowen
  17. Trans. J. Brit Ceram. Soc. v.74 no.5 Effects of Additions on the Sinterabilty of Barium Titanate M.N. Swilan;A.M. Gadalla
  18. PTC サ-ミスタとレヨエレクドロニク, セラミクス v.10 no.修 田中哲郎
  19. IEEE, Trans v.MET3 no.2 Ceramic Manufacturing Technology for the High Performance PTC Thermistors H. Ueoka;M. Yodogawa
  20. J. Am. Ceram. Soc. v.54 no.6 Effect of Grain Size on the Resistivity Anomaly in Semiconductive BaTiO₃Ceramics N. Hirose;H. Sasaki