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arXiv · 1112.4920

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
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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 °C with a thermal hysteresis.

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Yajun Qi, Zuhuang Chen, Lihua Wang, Xiaodong Han, Junling Wang, Thirumany Sritharan, Lang Chen. 2011-12-21. Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films. https://doi.org/10.1063/1.3676192

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