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Síntesis, estructura y propiedades de transporte de nuevos óxidos complejos de cobre, plata y plomo

Síntesis, estructura y propiedades de transporte de nuevos óxidos complejos de cobre, plata y plomo,E. M. TEJADA-ROSALES,J. ORÓ-SOLÉ,P. GÓMEZ-ROMERO

Síntesis, estructura y propiedades de transporte de nuevos óxidos complejos de cobre, plata y plomo  
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Synthesis, structure and transport properties of new complex oxides of copper, silver and lead A solid solution of formula Ag5Pb2-xCuxO6, (x = 0, 0.1, 0.3, 0.5) is reported. The synthesis was carried out by coprecipitation of Ag(I), Pb(II) and Cu(II) nitrates in alkaline media. The structure of the series is that of the parent Ag5Pb2O6, with Cu(II) occupying part of the octahedral Pb(IV) sites. This substitution induces interesting changes in the transport properties of the different members of the series, which range from metallic conductivity to semiconducting behavior. From Rietveld analysis for Ag5Pb1.5Cu0.5O6, the best fit is obtained for a model with Pb and Cu disordered occupying the octahedral site (Pm1, a = 5.8306(9) Å, c = 6.3430(6) Å, V = 187.37 Å 3 )
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