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Thickness dependence of structure and piezoelectric properties at nanoscale of polycrystalline PZT thin films

  • E. B. Araújo*
  • , E. C. Lima
  • , I. K. Bdikin
  • , A. L. Kholkin
  • *Corresponding author for this work
  • Universidade Estadual Paulista Júlio de Mesquita Filho
  • University of Aveiro

Research output: Chapter in Book/Report/Conference proceedingConference paperResearchpeer-review

Abstract

Lead zirconate titanate Pb(Zr 0.50Ti 0.50)O 3 (PZT) thin films were deposited by a polymeric chemical method on Pt(111)/Ti/SiO2/Si substrates to understand the mechanisms of phase transformations and the effect of film thickness on the structure, dielectric and piezoelectric properties in these films. PZT films pyrolyzed at temperatures higher than 350 °C present a coexistence of pyrochlore and perovskite phases, while only perovskite phase grows in films pyrolyzed at temperatures lower than 300 °C. For pyrochlore-free PZT thin films, a small (100) orientation tendency near the film-substrate interface was observed. Finally, we demonstrate the existence of a self-polarization effect in the studied PZT thin films. Results suggest that Schottky barriers and/or mechanical coupling near the filmsubstrate interface are not primarily responsible for the observed self-polarization effect in our films.

Original languageEnglish
Title of host publicationProc. of 2012 21st IEEE International Symposium on Applications of Ferroelectrics Held Jointly with 11th IEEE European Conference on the Applications of Polar Dielectrics and IEEE, ISAF/ECAPD/PFM 2012
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 21st IEEE Int. Symp. on Applications of Ferroelectrics Held with 11th IEEE European Conf. on Applications of Polar Dielectrics and 4th IEEE Int. Symp on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials, ISAF/ECAPD/PFM - Aveiro, Portugal
Duration: 9 Jul 201213 Jul 2012

Publication series

NameProceedings of 2012 21st IEEE Int. Symp. on Applications of Ferroelectrics held jointly with 11th IEEE European Conference on the Applications of Polar Dielectrics and IEEE PFM, ISAF/ECAPD/PFM 2012

Conference

Conference2012 21st IEEE Int. Symp. on Applications of Ferroelectrics Held with 11th IEEE European Conf. on Applications of Polar Dielectrics and 4th IEEE Int. Symp on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials, ISAF/ECAPD/PFM
Country/TerritoryPortugal
CityAveiro
Period9/07/1213/07/12

Keywords

  • piezoresponse
  • PZT thin films
  • self-polarization

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