Abstract
ABSTRACTBa0.70Sr0.30TiO3-(BST) ceramics were fabricated by conventional mixed oxide route. The structural phase transition, ferroelectric, dielectric and energy storage properties of BST ceramics capacitors were investigated. Electric field induced weak ferroelectricity is observed for BST ceramics. Temperature dependent dielectric property measurements of BST solid-solutions have shown a high dielectric constant and low dielectric loss. Room temperature breakdown field strength and energy densities were obtained from P-E loops. The recoverable energy density is 0.17 J/cm3 with dielectric breakdown strength as high as 150 kV/cm. BST ceramics have shown interesting energy densities; these might be the strong candidate materials for capacitor applications.
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