Abstract
Morphotropic phase boundary (MPB) in Nb-doped Pb(Zr,Ti)O3 thin films grown epitaxially on Nb:SrTiO3 (111) surfaces was studied by investigating their local piezoelectric response and domain structure using piezoresponse force microscopy. A sharp peak of piezoelectric coefficients was observed at Zr/Ti = 40/60, supporting the fact that the substrate constraint shifted the MPB in [111]-epitaxial Pb(Zr,Ti)O3 thin films toward the PbTiO3 side of composition from Zr/Ti = 52/48 for bulk materials. The domains at MPB also show a distinguishing structure with shrinking size and remarkably larger vertical piezoresponse compared to the single-phase samples. This work provided a deeper understanding about the effect of substrate constraint on the phase structures and electrical properties of epitaxial ferroelectric films.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.