Phys. Rev. Lett. 100, 027604 (2008) [4 pages]Nonlinear Piezoelectricity in Epitaxial Ferroelectrics at High Electric FieldsReceived 28 July 2007; published 18 January 2008 Nonlinear effects in the coupling of polarization with elastic strain have been predicted to occur in ferroelectric materials subjected to high electric fields. Such predictions are tested here for a PbZr0.2Ti0.8O3 ferroelectric thin film at electric fields in the range of several hundred MV/m and strains reaching up to 2.7%. The piezoelectric strain exceeds predictions based on constant piezoelectric coefficients at electric fields from approximately 200 to 400 MV/m, which is consistent with a nonlinear effect predicted to occur at corresponding piezoelectric distortions. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.027604
DOI:
10.1103/PhysRevLett.100.027604
PACS:
77.65.−j, 68.37.Yz, 77.84.Dy, 78.47.−p
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.