FERROELECTRIC CERAMIC MATERIAL

A ferroelectric ceramic material consists of a ceramic perovskitic mixed crystal which comprises a mixture of at least one component selected from the group consisting of PbTiO3, BaTiO3, Pb(Fe1/2Nb1/2)O3 and Pb(Zn1/3Nb2/3)O3, with at least one component selected from the group consisting of Pb(Mg1/3...

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Bibliographische Detailangaben
Hauptverfasser:	SCHOENECKER, ANDREAS, SEFFNER, LUTZ, GESEMANN, HANS-JUERGEN, SCHLENKRICH, FALKO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CABLES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONDUCTORS ELECTRICITY INSULATORS LIME, MAGNESIA LINING MACHINES METALLURGY PERFORMING OPERATIONS PRINTING PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES REFRACTORIES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SLAG STAMPS TRANSPORTING TREATMENT OF NATURAL STONE TYPEWRITERS
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Beschreibung
Zusammenfassung:	A ferroelectric ceramic material consists of a ceramic perovskitic mixed crystal which comprises a mixture of at least one component selected from the group consisting of PbTiO3, BaTiO3, Pb(Fe1/2Nb1/2)O3 and Pb(Zn1/3Nb2/3)O3, with at least one component selected from the group consisting of Pb(Mg1/3Nb2/3)O3, Pb(Ni1/3Nb2/3)O3, Pb(Fe2/3W1/3)O3 and Pb(Mn1/2Nb1/2)O3. The proportions of the components are determined according to the following equation: ? Xi x Tci = TcM i = 1 where Xi is the mole fraction of each i-component, Tci is the Curie point of the i-component and TcM is the Curie point of the mixture of components between 50.degree.C and 100.degree.C. The ferroelectric ceramic material according to the invention has a coercive force of less than 200 V/mm and is used for the storage of information in electrostatic printing processes.