Journal of Materials Chemistry · 1995 · 47 citations · 15 references
Oxide Anion ConductorsEngineeringSolid-state ChemistryChemistryInorganic MaterialChemical EngineeringAmbient TemperatureBicovox FamilyMaterials ScienceInorganic ChemistryMaterials EngineeringSolid-state IonicOxide ElectronicsStructural StudiesElectrochemistrySolid SolutionIonic ConductorApplied PhysicsCondensed Matter PhysicsFunctional Materials
The BICOVOX family of compounds (cobalt-doped Bi4V2O11) has been characterised combining chemical, structural and electrical approaches. The compositional extent of the single-phase BICOVOX solid solution, stable at ambient temperature, was determined. Single-crystal and powder X-ray diffraction data, combined with density measurements, enabled us to formulate the solid solution as Bi2(V1–x–yCoxBiy)Oz. The maximum x value (0.25) is reached when y= 0.04, and the maximum y value (0.06), when x= 0.10. The evolution of the Arrhenius conductivity plots vs. x and y has been studied within the tetragonal domain. The maximum σ value is roughly independent of composition for 0.10 ⩽x⩽ 0.15 and 0 ⩽y⩽ 0.04.
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John B. Goodenough, Arumugam Manthiram, M. Paranthaman et al. · Materials Science and Engineering B · 1992 · 110 citations