EPR and optical absorption measurements have been performed to detect the defects activated by X-rays in single crystals of zinconium dioxide, stabilized in the cubic phase by the addition of Y2O3 in two different concentrations (12 and 24 mol%). Production yield and thermal stability confirm the attribution of the 375 nm optical absorption band to the defect responsible for the EPR T-signal. Deviations from a random distribution of the stoichiometric oxygen vacancies are evidenced. These results agree with the existence of ordering processes in the vacancy system, as predicted by recent structural models. © 1993.
Azzoni, C., Camagni, P., Samoggia, G., Paleari, A. (1993). Defect structures and electronic properties in cubic stabilized zirconia. SOLID STATE IONICS, 60(4), 223-226 [10.1016/0167-2738(93)90001-J].
Defect structures and electronic properties in cubic stabilized zirconia
PALEARI, ALBERTO MARIA FELICE
1993
Abstract
EPR and optical absorption measurements have been performed to detect the defects activated by X-rays in single crystals of zinconium dioxide, stabilized in the cubic phase by the addition of Y2O3 in two different concentrations (12 and 24 mol%). Production yield and thermal stability confirm the attribution of the 375 nm optical absorption band to the defect responsible for the EPR T-signal. Deviations from a random distribution of the stoichiometric oxygen vacancies are evidenced. These results agree with the existence of ordering processes in the vacancy system, as predicted by recent structural models. © 1993.
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