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XAS Study of CuAl2O4Ceramic System
Journal de Physique IV : Proceedings
XAS technique was used to study changes around Cu atom in the C~Ai204-A203 system, induced by composition variations. The results showed that for compositions with 30 and 43% of CuO, the Cu atoms presents the same surroundmg of Cu in the CuO oxide (Ncu-0=4, Rcu-0=1.96 A). Samples with 20% (doped or undoped) showed siNcative changes in the Cu nearest neighbors number (Ncu-0=3) and in the mean bond length @cu-(r-1.93A). The qualitative analysis of the edge region showed that for the 20% of CuOdoi:10.1051/jp4:19972213 fatcat:omgfw7cqbfebdbado5l6ows7oy