High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi_0.5Na_0.5TiO₃-based ceramics.

ABSTRACT: As a promising candidate material replacing Pb(ZrTi)O₃ (PZT), the lead-free Bi_0.5Na_0.5TiO₃ (BNT) system exhibits outstanding piezoelectric and ferroelectric properties. However, the weak thermal stability of these electric properties hampers its practical applications. In this work, we designed and prepared novel Nb-doped 0.76Bi_0.5Na_0.5TiO₃-0.24Bi_0.5K_0.5TiO₃ (BNT-BKT) ceramics with superior temperature stability of electric properties. Both strain as well as discharging properties of 5% Nb-doped BNT-BKT ceramics varied less than 3% and 12.5% respectively from room temperature to 160 °C, ascribed to the enlarged gap between the depolarized temperature (T _d or T<

SUBMITTER: Wu Y 

PROVIDER: S-EPMC9066180 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature