Ionic Conductivity of Gd- and Y-Doped Ceria-Zirconia Solid Solutions

  title={Ionic Conductivity of Gd- and Y-Doped Ceria-Zirconia Solid Solutions},
  author={Vera R{\"u}hrup and Hans-Dieter Wiemh{\"o}fer},
  journal={Zeitschrift f{\"u}r Naturforschung B},
  pages={916 - 922}
  • Vera Rührup, Hans-Dieter Wiemhöfer
  • Published 2006
  • Chemistry
  • Zeitschrift für Naturforschung B
  • The total conductivity of the solid solutions (Ce1−xZrx)0.8Gd0.2O1.9 and (Ce1−xZrx)0.8Y0.2O1.9 was measured in air as a function of temperature (T = 300 °C- 600 °C) and composition (x = 0.0 - 0.9). A deep minimum of the bulk ionic conductivity was found for equal fractions of ceria and zirconia. It indicates enhanced defect association and ordering of the oxygen vacancies around x = 0.5. X-ray analysis (Guinier technique) showed the diffraction pattern of the cubic fluorite structure for all… CONTINUE READING

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