Abstract
Hysteresis in current and ferroelectric piezoelectric phase were collected across the walls of individual, electrically interfaced lead zirconate titanate (PZT) nanotubes. The nanotubes exhibit average on/off current ratios of ∼10 and ∼1000 in static local probe and top-electroded configurations, respectively. Reversibility in conduction state of an individual nanotube following different stages of an O2-rich/O2-deficient/O2-rich anneal cycle provide evidence of an oxygen vacancy concentration-based conduction mechanism.
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