Crystallization Studies and Properties of (Ba_1−xSr_x)TiO₃in Borosilicate Glass

Abstract

Ferroelectric glass-ceramics, with a basic composition (1Ày)(Ba 0.70 Sr 0.30 )TiO 3 -y(B 2 O 3 -x SiO 2 ), were synthesized by sol-gel method. The major crystalline phase is the perovskite, which exhibited volume nucleation. The formation of the crystalline phase, particle size, morphology, kinetics, and mechanism of crystallization of the ferroelectric in the glass matrix have been studied using differential thermal analysis, X-ray diffraction, and scanning electron microscopy. The kinetic parameters characterizing the crystallization of the perovskite phase have been determined using an Arrhenius model. The effect of glass content on the dielectric properties and the influence of the glass composition on the crystallization have also been investigated and are reported.

Dielectric behavior of perovskite glass ceramics

“…Thus, borosilicate enhances the dielectric constant of BST glass ceramics. It also lowers the value of T c [160,161]. The transition temperature decreases with increasing samarium content in BST ceramics.…”

Influence of defect mobility on electrostrain in acceptor-doped Ba0.80Sr0.20TiO3

“…8 Barium acetate, (ACS reagent grade, Merck, India), strontium acetate, (99.9%, Sigma-Aldrich, Germany), manganese (III) acetylacetonate (tech.-grade, SigmaAldrich, Germany), iron (III) acetylacetonate (tech.-grade, Sigma-Aldrich, Germany) and titanium tetra isopropoxide (97%, Sigma-Aldrich, USA) were used as precursors. The gel-derived powders, obtained after calcination at 800…”

Mechanical and dielectric behaviors of perovskite (Ba,Sr)TiO3 borosilicate glass ceramics

“…BST (barium strontium titanate) glass ceramics have perovskite  structure and show ferroelectric behavior. Divya et al [8,9] have investigated the crystallization and dielectric properties of BST borosilicate glass ceramics. This group has also reported dielectric behavior of BST with addition of bariumaluminosilicate.…”