The effect of oxygen vacancies on the elastic properties of BaCe0.9Y0.1O3?? is studied by measuring the complex Young’s modulus between 80 and 850 K varying the content of O vacancies from 0 to nearly 0.05. The Young’s modulus measured at a fixed temperature above 300 K may change by more than 20% but this is due to a shift of the rhombohedral-orthorhombic transition by 250 K and to proton and vacancy hopping. Below 100 K these effects are frozen and the filling of the O vacancies with OH ions increases the Young’s modulus by ? 1.3%.
Effect of O vacancies on the Young’s modulus of the BaCe1−xYxO3−d perovskite / F., Cordero; Trequattrini, Francesco; F., Deganella; V., LA PAROLA; E., Roncari; A., Sanson. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 94:(2009), pp. 181905-1-181905-3. [10.1063/1.3129873]
Effect of O vacancies on the Young’s modulus of the BaCe1−xYxO3−d perovskite
TREQUATTRINI, Francesco;
2009
Abstract
The effect of oxygen vacancies on the elastic properties of BaCe0.9Y0.1O3?? is studied by measuring the complex Young’s modulus between 80 and 850 K varying the content of O vacancies from 0 to nearly 0.05. The Young’s modulus measured at a fixed temperature above 300 K may change by more than 20% but this is due to a shift of the rhombohedral-orthorhombic transition by 250 K and to proton and vacancy hopping. Below 100 K these effects are frozen and the filling of the O vacancies with OH ions increases the Young’s modulus by ? 1.3%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
