Robert E. Newnham

Glass-ceramics for piezoelectric and pyroelectric devices

The advantages of glass-ceramics for preparing large, complex, pore free bodies have been exploited in the electronics industry for a variety of applications. New glass-forming techniques which utilize fast quenching techniques have expanded the range of glass-forming materials and the number of their applications (McMillan, 1979).

Method of detecting sound in water using piezoelectric-polymer composites with 0-3 connectivity

A hydrophone device is provided with a piezoelectric ceramic-polymer composite of 0-3 connectivity in which the piezoelectric filler comprises a solid solution of PBTiO3 -BiFeO3 wherein the solid solution contains 50-80 wt. % of the BiFeO3. The piezoelectric ceramic-polymer composite has large hydrostatic piezoelectric charge and voltage coefficients which are desirable in hydrophone devices.