Chemistry Letters · 1990 · 56 citations · 6 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsMaterials ChemistryElectrical Properties Of CeramicsIon-conducting MaterialsIonic ConductivitySinteringThermodynamics Of CeramicsActivation EnergyActivation Energy DeterminationConductionConductive CeramicsConductivityElectrical Conductivity EnhancementElectrical PropertiesGrain Boundary Conduction
Abstract Activation energies of electrical conduction for bulk and grain boundary in Li1+XMXTi2−X(PO4)3 (M = Al, Sc, or Y) systems were determined. The activation energy for the bulk kept constant in spite of the M3+ substitution, while that for the grain boundary appreciably decreased. The total conductivity enhancement by the M3+ substitution was attributed to the decrease in the activation energy of the grain boundary component.
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