Doped titanate glass-ceramic for grain boundary barrier layer capacitors

A high dielectric constant glass-ceramic material comprising small conducting grains based on BaTiO3 and/or SrTiO3 on the order of about 0.5-10.0 mu m surrounded by a thin microcrystalline insulating barrier layer at the grain boundary about 0.01-0.10 mu m thick wherein the conductivity of the grain...

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Bibliographische Detailangaben
Hauptverfasser:	CHANCE, DUDLEY A, HU, YUNG-HAW
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CEMENTS CERAMICS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LIME, MAGNESIA METALLURGY MINERAL OR SLAG WOOL REFRACTORIES SLAG SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A high dielectric constant glass-ceramic material comprising small conducting grains based on BaTiO3 and/or SrTiO3 on the order of about 0.5-10.0 mu m surrounded by a thin microcrystalline insulating barrier layer at the grain boundary about 0.01-0.10 mu m thick wherein the conductivity of the grains is enhanced by addition of about 0.1-4.0 mol% of a dopant selected from among Group V elements, Ge and Si substantially incorporated in the bulk lattice of the grains upon Ti sites. A novel process for forming the glass-ceramic material is also disclosed.