Abstract
Abstract High temperature X-ray diffractometry was applied to investigate the effects of oxygen sorption on the structure of La1−xSrxCoO3−δ. The lattice parameters of SrCoO2.5+δ (x =1), which was found to have a tetragonal unit cell in this study, were markedly affected by oxygen sorption, while no such effects were observed for the samples x=0, 0.2, and 0.4 with perovskite structure. It is suggested that the structural effects of oxygen sorption arise from the reordering of oxygen vacancies.
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