Abstract
Large piezoelectric effect in nonlinearly graded lead-free ferroelectric thin films In article number 2100370, using extended phase field simulations, Le Van Lich and co-workers demonstrate that a large piezoelectric effect can be obtained in nonlinearly graded lead-free ferroelectric thin film. The enhancement of piezoelectric property originates from the large gradient of electrical polarization, which makes the polarization field more susceptible to external excitation.
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