Piezoelectrics by Design: A Route through Short-period Perovskite Superlattices

Hena Das; Umesh V. Waghmare; T. Saha-Dasgupta

doi:10.1063/1.3561843

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arXiv · 1007.3069

Piezoelectrics by Design: A Route through Short-period Perovskite Superlattices

Hena Das·Umesh V. Waghmare·T. Saha-Dasgupta

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Abstract

Using first-principles density functional theory, we study piezoelectricity in short-period superlattices made with combination of ferroelectric and paraelectric components and exhibiting polar discontinuities. We show that piezoelectric response of such a superlattice can be tuned both in terms of sign and magnitude with a choice of its components. As these superlattices with nonswitchable polarization do not undergo ferroelectric transitions, we predict them to exhibit a robust piezoelectric response with weaker temperature dependence compared to their bulk counterparts.

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Hena Das, Umesh V. Waghmare, T. Saha-Dasgupta. 2010-07-19. Piezoelectrics by Design: A Route through Short-period Perovskite Superlattices. https://doi.org/10.1063/1.3561843

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