Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates

Nano Letters
Pratik KoiralaLaurence D Marks

Abstract

There is a growing interest in the flexoelectric effect, since at the nanoscale it is predicted to be very large. However, there have been no direct observations of flexoelectric bending consistent with current theoretical work that implies strains comparable to or exceeding the yield strains of typical materials. Here we show a direct observation of extraordinarily large, two-dimensional reversible bending at the nanoscale in dysprosium scandate due to the converse flexoelectric effect, with similar results for terbium and gadolinium scandate. Within a transmission electron microscope, thin features bend up to 90° with radii of curvature of about 1 μm, corresponding to very large nominal strains. Analysis including independent experimental determination of the flexoelectric coefficient is semiquantitatively consistent with interpreting the results as due to flexoelectricity. These results experimentally demonstrate large flexoelectric bending at the nanoscale.

References

Oct 15, 1986·Physical Review. B, Condensed Matter·A K Tagantsev
May 4, 2002·Biochimica Et Biophysica Acta·Alexander G Petrov
Sep 6, 2002·Nature·Natasha ErdmanLaurence D Marks
Aug 14, 2003·Journal of the American Chemical Society·Natasha ErdmanLaurence D Marks
Nov 13, 2007·Physical Review Letters·P ZubkoJ F Scott
Sep 28, 2010·Physical Review Letters·Raffaele Resta
Mar 11, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jiawang HongE Artacho
Aug 27, 2011·Physical Review Letters·D LeeT W Noh
Oct 18, 2011·Nature Materials·G CatalanB Noheda
Dec 21, 2011·Nano Letters·Peter MaksymovychSergei V Kalinin
Oct 3, 2013·Nanotechnology·P V Yudin, A K Tagantsev
Nov 6, 2013·Nature Communications·Massimiliano Stengel
May 23, 2014·Advanced Materials·Daesu LeeTae Won Noh
Aug 21, 2015·Nature Materials·A ManchonR A Duine
Nov 17, 2015·Nature Nanotechnology·Umesh Kumar BhaskarGustau Catalan
Sep 27, 2016·Nature·Jackeline NarvaezGustau Catalan

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Citations

Oct 2, 2019·Physical Review Letters·C A MizziL D Marks
Oct 10, 2020·Science·Katerina NaydenovaChristopher J Russo
Dec 18, 2018·Ultramicroscopy·Christopher A MizziLaurence D Marks
May 24, 2019·Nano Letters·Jennifer FowlieJean-Marc Triscone

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