Advanced Materials · 2001 · 380 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsElectronic MaterialsMaterials ChemistryDielectric CeramicsDielectric MaterialsDielectricsFerroelectric CeramicsFerroelectric MaterialsNanocompositesBarium TitanateBarium Titanate CeramicsCapacitor DielectricsCeramic CapacitorsComposite DielectricsDielectric ConstantFerroelectric CapacitorsFerroelectric Properties
A novel capacitor devicewith a high, frequency-independent dielectric constant has been fabricated by a simple powder processing route. A mixture of microparticles of ferroelectric BaTiO3 and de-passivated metallic nickel was sintered to yield percolative composites in which the system of conducting particles separated by insulator layers (see Figure for an SEM image) exhibits a dielectric constant higher than that of either component.