
handle: 10261/4697
[ES]: Se presenta la síntesis y caracterización de la serie de disolución sólida Ag5Pb2-xCuxO6, (x = 0, 0.1, 0.3, 0.5). La síntesis se llevó a cabo mediante coprecipitación de los nitratos de Ag(I), Pb(II) y Cu(II) en medio básico. La estructura de la serie es la del óxido Ag5Pb2O6, con el Cu(II) ocupando parcialmente los sitios octaédricos del Pb(IV). Esta sustitución induce cambios interesantes en las propiedades de transporte eléctrico de los miembros de la serie, que van desde conductividad metálica a comportamiento semiconductor. El análisis Rietveld para el óxido Ag5Pb1.5Cu0.5O6, mostró un modelo estructural óptimo en el que Pb y Cu comparten el sitio octaédrico en una distribución desordenada (Pm1, a = 5.8306(9) Å, c = 6.3430(6) Å, V = 187.37 Å3)
[EN]: 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 Å3)
Este trabajo fue financiado por la CICYT (MAT98-0807- C02-02, PB98-0491). También agradecemos al Ministerio de Educación y Cultura la beca predoctoral asignada a EMT-R.
Peer reviewed
Óxidos conductores, Óxidos plata cobre plomo, Silver copper lead oxides, propiedades de transporte, Solid solution, Resistivity, Clay industries. Ceramics. Glass, Conducting oxides, refinamiento Rietveld, resistividad, transport properties, Coprecipitation, Disolución sólida, conducting oxides, Refinamiento Rietveld, óxidos conductores, Silver copper lead oxide, coprecipitación, Resistividad, Rietveld refinement, coprecipitation, disolución sólida, Coprecipitación, powder X-Ray diffraction, resistivity, Difracción de rayos X de polvo, TP785-869, Propiedades del transporte, Transport properties, solid solution, difracción de rayos X de polvo, Powder X-Ray diffraction
Óxidos conductores, Óxidos plata cobre plomo, Silver copper lead oxides, propiedades de transporte, Solid solution, Resistivity, Clay industries. Ceramics. Glass, Conducting oxides, refinamiento Rietveld, resistividad, transport properties, Coprecipitation, Disolución sólida, conducting oxides, Refinamiento Rietveld, óxidos conductores, Silver copper lead oxide, coprecipitación, Resistividad, Rietveld refinement, coprecipitation, disolución sólida, Coprecipitación, powder X-Ray diffraction, resistivity, Difracción de rayos X de polvo, TP785-869, Propiedades del transporte, Transport properties, solid solution, difracción de rayos X de polvo, Powder X-Ray diffraction
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