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Electron-beam driven relaxation oscillations in ferroelectric nanodisks

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Scott_2015_APL_Electron.pdf (1.196Mb)
Date
12/10/2015
Author
Ng, N.
Ahluwalia, R.
Kumar, A.
Srolovitz, D.J.
Chandra, P.
Scott, James Floyd
Keywords
QC Physics
NDAS
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Abstract
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.
Citation
Ng , N , Ahluwalia , R , Kumar , A , Srolovitz , D J , Chandra , P & Scott , J F 2015 , ' Electron-beam driven relaxation oscillations in ferroelectric nanodisks ' , Applied Physics Letters , vol. 107 , no. 15 , 152902 . https://doi.org/10.1063/1.4932653
Publication
Applied Physics Letters
Status
Peer reviewed
DOI
https://doi.org/10.1063/1.4932653
ISSN
0003-6951
Type
Journal article
Rights
© 2015 AIP Publishing LLC. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: http://dx.doi.org/10.1063/1.4932653
Description
This work was supported by National Science Foundation Grant No. NSF-DMR-1334428 (P. Chandra).
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/7757

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