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6. The activation enthalpy for oxygen vacancy migration in yttria-doped cubic (or stabilized) zirconia is 0.48 eV. At 1000 C the lattice constant of 8

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6. The activation enthalpy for oxygen vacancy migration in yttria-doped cubic (or stabilized) zirconia is 0.48 eV. At 1000 C the lattice constant of 8 mol%Y:0. - 92 mol% ZrO2 (8YSZ) is 0.51 nm. Estimate the following properties for the material at 1000 C: (a) oxygen vacancy diffusion coefficient (b) oxygen ion diffusion coefficient 6. The activation enthalpy for oxygen vacancy migration in yttria-doped cubic (or stabilized) zirconia is 0.48 eV. At 1000 C the lattice constant of 8 mol%Y:0. - 92 mol% ZrO2 (8YSZ) is 0.51 nm. Estimate the following properties for the material at 1000 C: (a) oxygen vacancy diffusion coefficient (b) oxygen ion diffusion coefficient

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