Ultrafast photostriction in thin film bismuth ferrite and its correlation to electronic dynamics

Yuelin Li, Haidan Wen, Pice Chen, Margaret P. Cosgriff, Donald Walko, June Hyuk Lee, Carolina Adamo, Richard Schaller, Clare Rowland, Christian Schlepuetz, Eric Dufresne, Qingteng Zhang, Carlos Giles, Darrell Schlom, John Freeland, Paul Evans

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A series of laser pump, x-ray probe experiments show that above band gap photoexcitation can generate a large out-of-plane strain in multiferroic BiFeO3 thin films. The strain decays in a time scale that is the same as the photo-induced carriers measured in an optical transient absorption spectroscopy experiment. We attribute the strain to the piezoelectric effect due to screening of the depolarization field by laser induced carriers. A strong film thickness dependence of strain and carrier relaxation is also observed, revealing the role of the carrier transport in determining the structural and carrier dynamics in complex oxide thin films.

Original languageEnglish (US)
Title of host publicationAdvanced Materials Exploration with Neutrons and Synchrotron X-Rays
PublisherMaterials Research Society
Number of pages6
ISBN (Print)9781632661180
StatePublished - 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 25 2012Nov 30 2012

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2012 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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