Japanese Journal of Applied Physics · 1995 · 18 citations · 4 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsElectronic MaterialsDielectric CeramicsDielectric MaterialsDielectric PropertiesDielectricsElectrical Properties Of CeramicsPerovskite MaterialsCeramic CapacitorsCeramic DielectricsDielectric ConstantMultilayer Ceramic CapacitorsOxide DielectricsPerovskite DielectricsPolycrystalline MaterialsTemperature Dependence
Excess- WO 3 Pb(Mg 1/2 W 1/2 )O 3 -PbTiO 3 -Pb(Ni 2/3 Nb 2/3 )O 3 polycrystalline dielectric material was investigated. This material met EIA X7R specifications (the change of the capacitance is less than 15% over the temperature range from -55° C to +125° C). The material showed inhomogeneous compositional distributions within grains that consisted of three main parts, each possessing a different temperature dependence of the dielectric constant. It was found that the flat-temperature dependence of the dielectric constant in this system could be attributed to this inhomogeneous compositional distribution. Using this material, multilayer ceramic capacitors were fabricated.
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Toru Mori, Atsushi Ochi, Susumu Saito et al. · Japanese Journal of Applied Physics · 1992 · 20 citations
Natural Sciences, Materials Engineering, Materials Science +17