BiFeO3 nanodots prepared via dip-pen lithography on Nb-doped SrTiO3 and highly ordered pyrolytic graphite substrates
作者： Woo-Hee Kim , Jong Yeog Son
DOI: 10.1063/1.4817407
关键词: Pyrolytic carbon 、 Graphite 、 Materials science 、 Nanolithography 、 Substrate (electronics) 、 Optoelectronics 、 Niobium 、 Nanodot 、 Lithography 、 Nanotechnology 、 Ferroelectricity
摘要: Ferroelectric BiFeO3 (BFO) nanodots were prepared on two substrate types, a Nb-doped SrTiO3 (Nb:STO) and highly ordered pyrolytic graphite (HOPG), using elaborately controllable dip-pen nanolithography (DPN) technology. The lateral dimension thickness of the formed BFO exhibited dependency, resulting in higher aspect ratio with smaller hydrophobic HOPG than that Nb:STO substrate. Based piezoelectric force microscope (PFM) measurements, superior ferroelectricity d33 hysteresis loop was demonstrated by significant reduction clamping effect, compared to Nb:STO.
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