Effect of MgO-CaO-Al2O3-SiO2 glass additive on dielectric properties of Ba0.95Sr0.05Zr0.2Ti0.8O3 ceramics

► Glass-added Ba0.95Sr0.05Zr0.2Ti0.8O3 ceramics were prepared via wet chemical route. ► The dielectric behavior showed a DPT-to-relaxor crossover with adding the glass. ► The addition of the glass led to an evident change in nonlinear dielectric properties. ► The glass addition resulted in converse effects on the energy storage properties. ► The preferred glass content was determined in terms of the energy storage properties.