The growth mechanism of LiTaO₃ polycrystals and dielectric anomaly in the matrix of LiTaO₃-SiO₂ glass

Abstract

As an intermediate stage to understand the electric and structural properties during the transition from glass to crystal, the time dependence of growing mechanism measured using the synchrotron radiation for high statistics is presented for the LiTaO₃ polycrystals in the matrix of LiTaO₃-SiO₂ glass. In the electric measurement of LiTaO₃-SiO₂ glass with heating, there appears anomalous dielectric effect in the glass phase. From the experiments with changing sample environment, it is found the large increase in dielectric constant is affected by air and the structural relaxation effect of the glass state appears in the dielectric response measured after heat treatment.

Key Words:

• LiTaO₃-SiO₂ glassy
• growth
• dielectric anomaly