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arXiv · 1203.0256

Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates

Lu You·Shintaro Yasui·Xi Zou·Hui Ding·Zuhuang Chen·Weigang Chen·Lang Chen·Hiroshi Funakubo·Junling Wang
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Abstract

The structural and ferroelectric domain variants of highly-strained BiFeO3 films grown on vicinal LaSrAlO4 substrates were studied by piezoelectric force microscopy and high-resolution X-ray reciprocal space mapping. Through symmetry breaking of the substrate surface, ferroelastic domain variants in the highly-strained MC phase BiFeO3 can be greatly reduced. Single-domain film can be obtained on substrates with large miscut angle, which is accompanied by the reduction of structural variants in the mixed-phase nanodomains. These findings lead to better understanding of the phase evolution and polarization rotation process in the strain-driven morphotropic phase system.

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Lu You, Shintaro Yasui, Xi Zou, Hui Ding, Zuhuang Chen, Weigang Chen, Lang Chen, Hiroshi Funakubo, Junling Wang. 2012-03-01. Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates. https://doi.org/10.1063/1.4717986

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