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arXiv · 1407.7646

Faceting Oscillations in Nano-Ferroelectrics

J. F. Scott·Ashok Kumar
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Abstract

We observe periodic faceting of 8-nm diameter ferroelectric disks on a 10 s time-scale when thin Pb(Zr0.52Ti0.48)O3 (PZT) film is exposed to constant high-resolution transmission electron microscopy (HRTEM) beams. The oscillation is between circular disk geometry and sharply faceted hexagons. The behavior is analogous to that of spin structure and magnetic domain wall velocity oscillations in permalloy [A. Bisig et al., Nature Commun. 4, 2328 (2013)], involving overshoot and de-pinning from defects [C. P. Amann, et al., J. Rheol. 57, 149-175 (2013)].

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J. F. Scott, Ashok Kumar. 2014-07-29. Faceting Oscillations in Nano-Ferroelectrics. https://doi.org/10.1063/1.4892362

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