Electric-field-controlled directional motion of ferroelectric domain walls in multiferroic BiFeO3 films

[摘要]：We describe the directional ferroelectric domain wall motion in a multiferroic BiFeO3 thin film, which was grown epitaxially on a vicinal (001) SrTiO3 substrate. A structural analysis of the film shows that a strain gradient is developed in our film, whic

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