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Oxide ion conductivity and internal friction were examined for yttria and ceria co-doped cubic zirconia solid solution. The maxima of the internal friction (IF) were observed for Zr0.8−xCexY0.2O1.9 (x=0, 0.3, 0.5) polycrystals in the temperature range of 300–680K at 3.2Hz using forced torsion method. The CeO2 addition reduced both the oxide ion conductivity in low temperature range and IF peak amplitude...
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