Abstract
The authors report fabrication of multiferroic BiFeO3 (BFO) by the soft electron beam lithography technique. BiFeO3 nanopatterns with less than 100nm characteristic dimension are fabricated from its liquid-phase precursor on diverse substrates. The chemical constituents and phase purity are characterized by transmission electron microscopy. The ferroelectric behavior is confirmed by piezoresponse force microscopy. A saturation magnetization of about 10emu∕cm3 is observed, demonstrating the multiferroic characteristic of the BFO nanopatterns. Furthermore, the BFO nanolines pattened on SrTiO3 substrate exhibit a bamboolike structure, which can serve as an excellent model system for investigating the contribution of grain boundaries to the leakage current.
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