Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films

Yajun Qi; Zuhuang Chen; Lihua Wang; Xiaodong Han; Junling Wang; Thirumany Sritharan; Lang Chen

doi:10.1063/1.3676192

Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films

Materials Science 2015-06-03 v1

Authors: Yajun Qi , Zuhuang Chen , Lihua Wang , Xiaodong Han , Junling Wang , Thirumany Sritharan , Lang Chen

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Abstract

Transmission electron microscopy study of tetragonal-like BiFeO3 films reveals a hitherto unreported hierarchical nanodomain structure. The 30-50 nm wide stripe domains with {110} domain walls consist of a substructure of lamellar nanodomains of 8-10 nm width in a herringbone-like arrangement. In situ heating and cooling reveals a reversible transition from the hierarchical nanodomain structure to a tweed-like domain structure which is accompanied by a first-order phase transition near 120 {\deg}C with a thermal hysteresis.

Keywords

BiFeO3 films hierarchical nanodomain structure transmission electron microscopy phase transition domain walls

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@article{arxiv.1112.4920,
  title  = {Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films},
  author = {Yajun Qi and Zuhuang Chen and Lihua Wang and Xiaodong Han and Junling Wang and Thirumany Sritharan and Lang Chen},
  journal= {arXiv preprint arXiv:1112.4920},
  year   = {2015}
}

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accepted to Applied Physics Letters for publication

Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films

Abstract

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