Abstract
The location of oxygen vacancies in Sr2CuO3+δ single crystal has been studied by polarized extended x-ray absorption fine structure (PEXAFS) at Cu K-edge. We found that the oxygen vacancies locate both in the CuO2 plane and at the apical site. Among the total 18 ± 8% oxygen vacancies, about 10 ± 5% locates in the CuO2 plane and 8 ± 3% at the apical site.
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