Enhanced energy storage performances under low electric fields in (1 − x) Na0.5Bi0.5TiO3–xSr0.7Bi0.2(Al0.5Ta0.5)O3 relaxor ferroelectric ceramics: impact of Sr0.7Bi0.2(Al0.5Ta0.5)O3 on structure and electrical properties

The introduction of Sr 0.7 Bi 0.2 (Al 0.5 Ta 0.5 )O 3 into Na 0.5 Bi 0.5 TiO 3 induces the coexistence of R 3 c and P 4 bm phases and disrupts ferroelectric domains, thereby optimizing the P – E loops with relaxor behavior and enhancing the energy storage performances.