F245 (2007). Structural chemistry and conductivity of solid solution YBa1-xSrxCo2O5+δ.
This double perovskite phase can easily take oxygen to fill the vacancies in the Y layer and these oxygen anions are mobile. The ordering of extra oxygen anions form a 3 x 3 superstructure. [A. McKinlay, P. Connor, J. S. T. Irvine, W. Z. Zhou, J. Phys. Chem. C. 111, 19120-19125 (2007)]. The first author, A. McKinlay, was a final year undergraduate student and the paper is based on his project report.