The Effect of PVA Binder Solvent Composition on the Microstructure and Electrical Properties of 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 Doped with Dy2O3

In this study, the effect of polyvinyl alcohol (PVA) binder solvent composition on electrical properties sintered 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 ceramics doped with x wt.% Dy2O3 (0.0 ? 0.3) was investigated. absence PVA binder, specimens at 1260 and 1320 °C for 1 h in a reducing atmosphere showed single BaTiO3 phase perovskite structure. The relative densities were higher than 90%, grain morphologies uniform all compositions. At kHz, dielectric constant depended not only their crystal structural characteristics, but also microstructural characteristics. characteristics affected by ethyl alcohol:water ratio 10 PVA-111 solution. A homogeneous microstructure observed 0.1 Dy2O3-doped when alcohol/water solution 40/60. These maximum (?r = 2723.3) an insulation resistance 270 G?. relationships between dissipation factor (tan?)