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Low symmetry monoclinic MC phase in epitaxial BiFeO3 thin films on LaSrAlO4 substrates

  • Zuhuang Chen*
  • , Zhenlin Luo
  • , Yajun Qi
  • , Ping Yang
  • , Shuxiang Wu
  • , Chuanwei Huang
  • , Tom Wu
  • , Junling Wang
  • , Chen Gao
  • , Thirumany Sritharan
  • , Lang Chen
  • *Corresponding author for this work
  • Nanyang Technological University
  • University of Science and Technology of China
  • National University of Singapore

Research output: Contribution to journalArticlepeer-review

Abstract

We reported that the tetragonal-like phase identified in strained epitaxial BiFeO3 films on a (001) LaSrAlO4 single crystal substrates is monoclinic MC, based on high resolution synchrotron x-ray studies and piezoresponse force microscopy measurements. This M C phase has different symmetry with the rhombohedral-like monoclinic MA phase found in BiFeO3 films grown on low mismatch SrTiO3 substrates. Transmission electron microscopy revealed that the films on LaSrAlO4 substrates have a high crystalline quality and coherent interface.

Original languageEnglish
Article number242903
JournalApplied Physics Letters
Volume97
Issue number24
DOIs
StatePublished - 13 Dec 2010
Externally publishedYes

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