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- W3083485252 endingPage "2004641" @default.
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- W3083485252 abstract "One of the key problems in the existing lead-free piezoelectrics lies in how to further boost their dynamic piezoelectric responses, i.e., electrostrain and dynamic piezoelectric constants, in an effective and facile manner, making them comparable to those of widely used lead-based counterparts. In this work, a new strategy is developed to largely improve the dynamic piezoelectric properties of lead-free ferroelectrics using phase field simulations by combining the relaxor/ferroelectric crossover rendering potentially reversible electrostrain and the morphotropic phase boundary (MPB) providing easy paths of ferroelectric polarization rotations. Following the guidance of simulation results, Mn-doped (Bi0.5Na0.5)TiO3–BaTiO3 lead-free piezoelectric ceramics with relaxor/MPB crossover are synthesized. A large reversible electrostrain (Smax) of 0.55% with a promising piezoelectric constant d33* (Smax/Emax) of 917 pm V–1 at the designed relaxor/MPB crossover is obtained, outperforming almost all practical lead-free counterparts when taking both electrostrain and dynamic piezoelectric constants into consideration. The strategy of utilizing relaxor/MPB crossover provides a new route for enhancing the dynamic piezoelectric responses in lead-free ferroelectric perovskites." @default.
- W3083485252 created "2020-09-11" @default.
- W3083485252 creator A5010881142 @default.
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- W3083485252 date "2020-09-06" @default.
- W3083485252 modified "2023-10-14" @default.
- W3083485252 title "A New Strategy for Large Dynamic Piezoelectric Responses in Lead‐Free Ferroelectrics: The Relaxor/Morphotropic Phase Boundary Crossover" @default.
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- W3083485252 doi "https://doi.org/10.1002/adfm.202004641" @default.
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