2014/03/10 by Abolfazl Jalalian, A. Jalalian, А. М. Гришин +7 · 4 citations
Materials Science · Engineering · #Ferroelectric and Piezoelectric Materials #Advanced Sensor and Energy Harvesting Materials #Multiferroics and related materials
paper · doi:10.1063/1.4867013
Currently available low-dimensional piezoelectric materials show a low piezoelectric coefficient d33 of merely 100 pm V−1 with Pb(Zr, Ti)O3-based materials at the high end. Here, we report very large piezoelectricity in Ba(Ti0.80Zr0.20)O3-0.5(Ba0.70Ca0.30)TiO3 (BTZ-0.5BCT) lead-free nanostructures sintered as thin films (d33 = 140 pm V−1) and nanofibers (d33 = 180 pm V−1). The influences of lateral size, geometry, and the clamping effect on the piezoelectric performance were investigated for both thin films and nanofibers. Combining a high piezoelectric coefficient with environmental benefits, the BTZ-0.5BCT nanostructures provide the superior functions sought for highly efficient piezoelectric devices and electromechanical systems.