TITLE

Effect of O vacancies on the Young’s modulus of the BaCe1-xYxO3-δ perovskite

AUTHOR(S)
Cordero, F.; Trequattrini, F.; Deganello, F.; La Parola, V.; Roncari, E.; Sanson, A.
PUB. DATE
May 2009
SOURCE
Applied Physics Letters;5/4/2009, Vol. 94 Issue 18, p181905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of oxygen vacancies on the elastic properties of BaCe0.9Y0.1O3-δ 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%.
ACCESSION #
39354752

 

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