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OXYGEN VACANCY DISTRIBUTION IN Ln 2 O 3 -DOPED CeO 2 ELECTROLYTES (Ln = Sm, Gd, Y, Dy)
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Abstract: Oxygen vacancy distribution around dopant Ln
3+
in Ln
2
O
3
-doped CeO
electrolytes (Ln =
Sm, Gd, Y, Dy) was investigated using statistical moment method. The explicit expressions of vacancy-
dopant association energies at the first nearest neighbor (1NN) or the second nearest neighbor (2NN) sites
relative to Ln
3+
ions were derived including the anharmonicity effects of lattice vibrations. The findings
showed that local deformation was generated from preferential distribution of oxygen vacancies in the
vicinity of Ln
3+
2
cations. The findings of this study were compared to earlier research.
3+
in Ln
2
O
3
-doped CeO
electrolytes (Ln =
Sm, Gd, Y, Dy) was investigated using statistical moment method. The explicit expressions of vacancy-
dopant association energies at the first nearest neighbor (1NN) or the second nearest neighbor (2NN) sites
relative to Ln
3+
ions were derived including the anharmonicity effects of lattice vibrations. The findings
showed that local deformation was generated from preferential distribution of oxygen vacancies in the
vicinity of Ln
3+
2
cations. The findings of this study were compared to earlier research.
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