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Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
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Publication date
Application filed by NGK Spark Plug Co LtdfiledCriticalNGK Spark Plug Co Ltd
Priority to JP62136989ApriorityCriticalpatent/JPS6487557A/en
Publication of JPS6487557ApublicationCriticalpatent/JPS6487557A/en
PURPOSE:To obtain the titled compsn. having a high Curie point, a high dielectric constant, a high electromechanical coupling factor and a high piezoelectrostriction constant by synthesizing a Bi compd. having a specified compsn. CONSTITUTION:Na2CO3, Bi2O5, TiO2 and Nb2O5 are stoichiometrically weighed so as to obtain a compsn. represented by a molecular formula Na0.5Bi6.5Ti3Nb2 O21. They are wet-mixed, dried, molded and calcined. The calcined product is wet-ground, molded and sintered to obtain the titled compsn.