Superior piezoelectricity and resistivity in CaBi 2 Nb 2 O 9 high-temperature piezoelectric ceramics: synergy of structural distortion and weak texturing

The polycrystalline CaBi 2 Nb 2 O 9 ceramics with the addition of B 2 O 3 can realize a large d 33 of 20.4 pC N −1 and an ultra-high electrical resistivity of 1.4 × 10 7 Ω cm (at 600 °C), while still retaining a high T C of 958 °C.