Physics-based models of dynamic response of piezoceramics

Willatzen, M., Lew Yan Voon, L.C., Lassen, B., Melnik, R.

 Materials Science and Technology (MS&T) 2006: Materials and Systems, Volume 1, Proceedings of the Materials Science & Technology Conference and Exhibition, Duke Energy Center, Cincinnati, OH, USA, Oct 15-19, 2006, ISBN 978-0-470-93154-7, pp. 613--624, 2006


A physics-based model of piezoelectric multilayer systems is presented and applied to two applications of multilayered structures. The first example is for one dimensional multilayer ultrasound transducers, including dielectric losses in the piezoceramic material and mechanical losses in the transducer material layers. Results are shown for lead zirconate and barium titanate. The second example discusses the impact of a fully self-consistent treatment of piezoelectricity and spontaneous polarization in analyzing the device performance of nanodevices (transistors, lasers) based upon nitride wide-band-gap semiconductors. We show that different physics could be operative depending upon the material properties and device design.

Keywords: multilayer systems, piezoelectric effect, semiconductors, nanodevices, self-consistent solution