Production of ferro-electric composition material for use micro- electronic components uses fritted ferro-electric particles coated with dielectric compound aided by solvent and precursor

The procedure, in which particles of a ferro-electric compound are coated with a dielectric compound, is carried out by placing the particles of the ferro-electric compound in contact with a fluid containing at least one solvent and a precursor of the dielectric compound, with the fluid maintained u...

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Bibliographische Detailangaben
Hauptverfasser:	CANSELL FRANCOIS PIERRE MICHEL, ELISSALDE CATHERINE JOCELYNE, HUBER CHRISTOPHE ANTOINE STEPHANE, MAGLIONE MARIO, AYMONIER CYRIL GERARD JACQUES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CEMENTS CERAMICS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIME, MAGNESIA METALLURGY REFRACTORIES SEMICONDUCTOR DEVICES SLAG SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The procedure, in which particles of a ferro-electric compound are coated with a dielectric compound, is carried out by placing the particles of the ferro-electric compound in contact with a fluid containing at least one solvent and a precursor of the dielectric compound, with the fluid maintained under pressure and at a temperature above 10 degrees C. The ferro-electric compound is selected from the following materials: PbTiO3, PZT, PMN, LiNbO3, KNbO3, KTN, BaTiO3, BaTiO3-SrTiO3, and the dielectric compound is selected from oxides and nitrides. L'invention concerne un procédé d'obtention d'un matériau composite ferroélectrique, comprenant les étapes consistant à :- enrober des particules d'un composé ferroélectrique d'une couche d'un composé diélectrique,- former un matériau composite dense par frittage des particules enrobées,caractérisé en ce que l'étape d'enrobage comprend une mise en contact des particules du composé ferroélectrique avec un fluide contenant au moins un solvant et un précurseur du composé diélectrique, le fluide étant maintenu sous pression.