Characterization of Local Crystal and Electronic Structure on Sr₂CuO₂F_2+x Material by Synchrotron Radiation

Abstract:

In order to study the evolution of local crystal and electronic structure of Sr₂CuO₂F_2+x, the synchrotron radiation x-ray absorption (XAS) and x-ray absorption fine structure (XAFS) techniques were both performed on different amount of Sr₂CuO₂F_2+x materials. The relationship between high T_c superconductivity and valence state of cooper was mainly discussed. And the effect of by-reproduce SrF₂ in non-superconductive Sr₂CuO₂F_2+x on physical property of this material was considered. The experimental results showed that the valence state of Cu and the amount of SrF₂ was mainly related with high T_c superconductivity of Sr₂CuO₂F_2+x material, indicating a good method for improving T_c.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 175-179
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.175
• Online since: March 2016
• Authors: Hai Bo Wang*, Qian Wang, Yan Dong Ji, Meng Meng Yang, Yong Qi Dong
• Keywords: Microstructure, Sr₂CuO₂F_2+x, Superconductivity, XAFS, XAS

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