Coordination And Oxidation State Analysis Of Cobalt In Nanocrystalline Liga5o8 By X-Ray Absorption Spectroscopy

15TH INTERNATIONAL CONFERENCE ON X-RAY ABSORPTION FINE STRUCTURE (XAFS15)（2013）

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摘要

The luminescence of nanocrystalline LiGa5O8:Co2+ has been assigned to Co2+ in tetrahedral sites. However, x-ray absorption spectroscopy (XAS) reveals that there is a significant fraction of cobalt ions that substitute into the lattice in the octahedral sites and, in this case, predominantly in the 3+ oxidation state.

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