공침법에 의한 반도성 BaTiO3 제조

Fabrication of Doped BaTiO3 by Coprecipitation Method

  • 안영필 (한양대학교 무기재료공학과) ;
  • 김복희 (한양대학교 무기재료공학과) ;
  • 이태석 (한양대학교 무기재료공학과)
  • 발행 : 1988.04.01

초록

The Nb doped BaTiO3 was synthesized by coprecipitation method using H2O2 media in region from pH 8 to pH 11. The powder prepared by using this method was crystallized at about 20$0^{\circ}C$ and average particle size was controlled by heat treatment. Because of preparation having fine particle and relatively narrow particle size distribution, high performance PTC device was made of these precipitated powders.

키워드

참고문헌

  1. Philips Res. Rep. v.5 no.173 Controlled Valency Semiconductor E.J. Verwey;P.W. Haaijman;F.C. Rameijn;G.W. Oosterhant
  2. Netherlands Patent 631,
  3. J. Am. Ceram. Soc. v.44 no.6 Investigation of Rare Earth doped Barium Titanate V.J. Tennery;R.L. Cook
  4. J. Am. Ceram. 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
  5. Solid State Electron v.3 no.1 Barium Titanate as a Semiconductor with Blocking Layers W. Heywang
  6. Philips Res. Rep. v.31 New Aspects of an Improved PTC Model J. Daniels(et al.)
  7. IEEE Trans. Mfg. Tech v.MFT-3 no.2 Ceramic Manufacturing Technology for the High Performance PTC Thermistor H. Ueoka;M. Yodogawa
  8. セラミツク 誘電體工學 岡崎淸
  9. Helvetica Chimica Acta v.55 no.Fasc8 Die Kristallstrukturen Vonzwei Mononuk-leareu Peroxititan(Ⅳ)-Dipicalinatem D. Schwarzenbach
  10. Advanced Chemistry(4th edition) Cotton;Wilkinson
  11. J. Am. Ceram. Soc. v.46 no.8 Preparation of Semiconducting Titanates by Chemical Means K. Gallapher;F. Schrey;F.V. Dimarcello