Enhanced energy storage properties of barium strontium titanate ceramics prepared by sol-gel method and spark plasma sintering

Dense Ba0.4Sr0.6TiO3ceramics with fine grains and uniform microstructure were prepared by sol-gel method and spark plasma sintering (SPS). The dielectric properties, microstructures, and energy storage performance of spark plasma sintered Ba0.4Sr0.6TiO3 ceramics were evaluated. Fine Ba0.4Sr0.6TiO3 powders were synthesized by sol-gel method at above 750 °C. SPS technique showed its advantages in suppressing exaggerated grain growth and increasing...