Electron-beam driven relaxation oscillations in ferroelectric nanodisks

N. Ng, R. Ahluwalia, A. Kumar, D.J. Srolovitz, P. Chandra, James Floyd Scott

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Using a combination of computational simulations, atomic-scale resolution imaging and phenomenological modelling, we examine the underlying mechanism for nanodomain restructuring in lead zirconate titanate nanodisks driven by electron beams. The observed subhertz nanodomain dynamics are identified with relaxation oscillations where the charging/discharging cycle time is determined by saturation of charge traps and nanodomain wall creep. These results are unusual in that they indicate very slow athermal dynamics in nanoscale systems, and possible applications of gated versions are discussed.
Original languageEnglish
Article number152902
JournalApplied Physics Letters
Issue number15
Publication statusPublished - 12 Oct 2015


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