Abstract
A ternary perovskite dielectric (1 − x) ( 0.92Bi0.5Na0.5TiO3-0.08BaTiO3)-x AgNbO3 has been developed for application as high-temperature energy-storage capacitors. It is suggested that with increasing AN content, the material has experienced non-ergodic relaxor → ergodic relaxor → paraelectric state transformation. The most attractive properties are obtained in the composition x = 0.10 with superior high-temperature dielectric stability (er150°C = 1901, TCC150°C≤ 15% in 20–368 °C range) and optimized energy-storage performance (Wmax =1.07 J/cm3, ηmax = 78% at 10.4 kV/mm).
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