Ultrafast photoinduced mechanical strain in epitaxial BiFeO 3 thin films

L. Y. Chen, J. C. Yang, C. W. Luo, C. W. Laing, K. H. Wu, J. Y. Lin, T. M. Uen, J. Y. Juang, Y. H. Chu, T. Kobayashi

Research output: Contribution to journalArticle

34 Citations (Scopus)


We studied ultrafast dynamics and photoinduced mechanical strain of BiFeO 3 thin films by dual-color transient reflectivity measurements (ΔR/R). Anisotropic photostriction in BiFeO 3 is found to be mainly driven by the optical rectification effect. Results of the photostriction at various thicknesses show that the estimated sound velocity along [110] direction of BiFeO 3 is 4.76 km/s.

Original languageEnglish
Article number041902
JournalApplied Physics Letters
Issue number4
Publication statusPublished - 2012 Jul 23

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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