Location of oxygen vacancies in Sr2CuO3+δ single crystal determined by polarized EXAFS at Cu K-edge. (September 2019)

• Record Type: Journal Article
• Authors: Wang, H.B.; Liang, W.; Luo, Z.L.; Liu, Q.Q.; Huang, H.L.; Yang, M.M.; Yang, Y.J.; Hu, S.X.; Jiang, Z.; Li, S.D.; Sun, X.; Jin, C.Q.; Gao, C.
• Is Part Of: Solid state communications. Volume 299(2019)
• Publication Date: 2019-09
• Subjects: Sr2CuO3+δ single crystal -- Polarized EXAFS -- Oxygen vacancy -- High temperature cuprate superconductors; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2019.113649
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: The location of oxygen vacancies in Sr2 CuO3+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. Highlights: The location of oxygen vacancies in Sr2 CuO3+δ single crystal has been studied. 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.