Ferroelectric ceramics

A ferroelectric ceramic for use as a pyroelectric, said ceramic having the composition: Pb1+ delta äÄ(Mg1/3Nb2/3)y (Zr1-xTix)1-yÜ1-zAzüO3 where: 0.05≥ delta ≥0 0.4≥ x>0 0.4≥ y> 0 0.05≥ z> 0 and wherein A is a cationic multivalent octahedral site substituent. The ferroelectric ceramic is use...

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Bibliographische Detailangaben
1. Verfasser:	WHATMORE, ROGER WILLIAM
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CABLES CEMENTS CERAMICS CHEMISTRY COLORIMETRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONDUCTORS ELECTRICITY INSULATORS LIME, MAGNESIA MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METALLURGY PHYSICS RADIATION PYROMETRY REFRACTORIES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SLAG TESTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A ferroelectric ceramic for use as a pyroelectric, said ceramic having the composition: Pb1+ delta äÄ(Mg1/3Nb2/3)y (Zr1-xTix)1-yÜ1-zAzüO3 where: 0.05≥ delta ≥0 0.4≥ x>0 0.4≥ y> 0 0.05≥ z> 0 and wherein A is a cationic multivalent octahedral site substituent. The ferroelectric ceramic is useful as an active pyroelectric material in infrared detecting devices.