Piezoelectric Properties and Microstructure of Glass-Ceramics in the BaO-SrO-SiO2-TiO2System

Abstract

Previous studies have shown that fresnoite (BazTiSizOe ) glass-ceramics with oriented crystallites are promising candidate materials for pyroelectric detectors and surface acoustic wave devices. A detailed investigation of the properties and microstructure of glassceramics in the Baz-rSrrTiSiaOe solid solution has been carried out. Glasses of several compositions were prepared and recrystallized through a heating schedule to produce an oriented region of crystallites perpendicular to the surface, 100-500pm in depth. The microstructure of the glass-ceramics was examined by scanning electron microscopy. Their dielectric and piezoelectric properties were studied.