Dielectric properties of mechanically activated strontium titanate ceramics

In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation powders was used to modify the functional materials. Microstructural SEM analysis ceramics showed that increase in time results less porous samples. Raman spectroscopy indicated changes broadening asymmetry TO2 mode with a change activation. Fano due its interaction polarization fluctuations polar micro-regions, which are consequence presence oxygen vacancies caused by The maximum value permittivity observed sample activated for 10 min. Also, min exhibits relatively low values loss tangent, compared other mechanically samples, providing best overall performance