Structure and piezoelectric properties of MnO2 doped Ba0.985Ca0.005Ti0.98Sn0.02O3 lead-free ceramics

Enhanced ferroelectric and piezoelectric performance of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free ceramics upon Ce and Sb co-doping

“…39 Nevertheless, dopants will increase the concentration of cation vacancies, which reduces the stability of oxygen octahedron. 21 As a result, T c decreased slightly with the increase in Ce doping. Compared with T c for the undoped BCZT ceramics, T c for the Ce and Sb co-doped ceramic was elevated.…”

“…20 As BaTiO 3 has rich phase transition and unit cell structure types, the modication of BT to form MPB to improve piezoelectric performance is a promising strategy. 21 Ren et al have found an MPB region by utilizing Ca 2+ and Zr 4+ ions to modify the BaTiO 3 ceramic. (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )(BCZT) shows fascinating piezoelectric performance (d 33 $ 600 pC N À1 ), which is comparable to that of the commercial PZT ceramics.…”