Ferroelectric ceramics; pyroelectric infra red detectors

A ferroelectric ceramic for use as a pyroelectric, said ceramic having the composition: ```Pb1+ w [(Mg1/3Nb2/3)y (Zr1-xTix)1-y]1-zAz O3 ```where: 0.05 /w / 0 ```0.4 / x>0 ```0.4 / y> 0 ```0.05 / z> 0 ```and wherein A is a cationic multivalent octahedral site substituent, preferably manganes...

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Bibliographische Detailangaben
1. Verfasser:	ROGER WILLIAM WHATMORE
Format:	Patent
Sprache:	eng
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+ w [(Mg1/3Nb2/3)y (Zr1-xTix)1-y]1-zAz O3 ```where: 0.05 /w / 0 ```0.4 / x>0 ```0.4 / y> 0 ```0.05 / z> 0 ```and wherein A is a cationic multivalent octahedral site substituent, preferably manganese or uranium. Pyroelectric infra red detectors incorporating the ferroelectric ceramic are described.