Near-ideal electromechanical coupling in textured piezoelectric ceramics.

ABSTRACT: Electromechanical coupling factor, k, of piezoelectric materials determines the conversion efficiency of mechanical to electrical energy or electrical to mechanical energy. Here, we provide an fundamental approach to design piezoelectric materials that provide near-ideal magnitude of k, via exploiting the electrocrystalline anisotropy through fabrication of grain-oriented or textured ceramics. Coupled phase field simulation and experimental investigation on <001> textured Pb(Mg_1/3Nb_2/3)O₃-Pb(Zr,Ti)O₃ ceramics illustrate that k can reach same magnitude as that for a single crystal, far beyond the average value of traditional ceramics. To provide atomistic-scale understanding of our approach, we employ a theoretical model to determine the physical

SUBMITTER: Yan Y 

PROVIDER: S-EPMC9217974 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature