Journal of the American Ceramic Society · 1947 · 14 citations · 3 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsCrystal StructureDielectric CeramicsDielectric MaterialsDielectric PropertiesDielectricsElectrical Properties Of CeramicsCeramic DielectricsConductionConductive CeramicsDielectric Loss MechanismsElectrical CeramicsHigh-dielectric-constant MaterialsHigh-permittivity CeramicsLow-loss Dielectric Materials
A bstract Microscopic, and X‐ray examinations of a series of steatite compositions reveal that the body having the best dielectric properties Also has the simplest and most homogeneous physical structure. It is believed that the attainment of similar physical structures in other ceramic bodies will lead to improvements in dielectric properties. This empirical finding is in accordance with present theories of conduction in crystals. It depends on the contribution to conductivity and dielectric loss made by imperfections of crystal structure. However, even in homogeneous materials, alkaline earth ions tend to cause less conduction under like conditions than alkali ions, and there are high‐dielectric constant materials like the titanates which, though homogeneous and pure, have a high loss.
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