Highly Donor-doped $Ba_{1-x}La_{x}TiO_{3}$ Semiconductive Ceramics

  • Soh, Dea-Wha (Department of Electronic Engineering, Myongji University) ;
  • Korobova N. (Combustion Problem Institute, Kazakhstan)
  • Published : 2003.03.01

Abstract

Sol-gel processing of $BaTiO_{3}$ ceramics doped with La (0.01∼1.00 at.%) were prepared from metal barium, titanium n-butoxide and lanthanum isopropoxide. Characterization of the sol-gel-derived powder using XRD, SEM is also reported. The obtained results suggested that insulator to semiconductor transition for highly donor-doped barium titanate was closely related to the incorporation of donor into the grains and to the resultant grain size, which were significantly affected by the sinterability of $BaTiO_{3}$ powders and sintering conditions used.

Keywords

Sol-gel processing;$BaTiO_{3}$ ceramics;titanium n-butoxide;lanthanum iso-propoxide;semiconductor

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