Abstract
Measurements of the sample length of PbZrO3 and LaAlO3 under slowly increasing force (3-30 mN/min) yield a superposition of a continuous decrease interrupted by discontinuous drops. This strain intermittency is induced by the jerky movement of ferroelastic domain walls through avalanches near the depinning threshold. At temperatures close to the domain freezing regime, the distributions of the calculated squared drop velocity maxima N(υm2) follow a power law behaviour with exponents ε=1.6±0.2. This is in good agreement with the energy exponent ε=1.8±0.2 recently found for the movement of a single needle tip in LaAlO3 [R. J. Harrison and E. K. H. Salje, Appl. Phys. Lett. 97, 021907 (2010)]. With increasing temperature, N(υm2) changes from a power law at low temperatures to an exponential law at elevated temperatures, indicating that thermal fluctuations increasingly enable domain wall segments to unpin even when the driving force is smaller than the corresponding barrier.
Authors
8
- S. Puchberger (first)
- V. Soprunyuk (additional)
- W. Schranz (additional)
- A. Tröster (additional)
- K. Roleder (additional)
- A. Majchrowski (additional)
- M. A. Carpenter (additional)
- E.K.H. Salje (additional)
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Dates
Type | When |
---|---|
Created | 8 years, 4 months ago (April 5, 2017, 8:16 a.m.) |
Deposited | 3 months ago (May 29, 2025, 3:29 p.m.) |
Indexed | 1 month ago (July 30, 2025, 7:08 a.m.) |
Issued | 8 years, 5 months ago (April 1, 2017) |
Published | 8 years, 5 months ago (April 1, 2017) |
Published Online | 8 years, 4 months ago (April 5, 2017) |
Published Print | 8 years, 5 months ago (April 1, 2017) |
Funders
3
Leverhulme Trust
10.13039/501100000275
Awards
1
- EM-2016-004
Austrian Science Fund
10.13039/501100002428
Region: Europe
gov (National government)
Labels
8
- Fonds zur Förderung der Wissenschaftlichen Forschung
- FWF Der Wissenschaftsfonds
- FWF Austrian Science Fund
- Der Wissenschaftsfonds FWF
- Österreichischer Wissenschaftsfonds
- FWF
- FFWF
- FWF EN
Awards
2
- P27738-N28
- P28672-N36
Engineering and Physical Sciences Research Council
10.13039/501100000266
Region: Europe
gov (National government)
Labels
4
- UKRI Engineering and Physical Sciences Research Council
- Engineering and Physical Sciences Research Council - UKRI
- Engineering & Physical Sciences Research Council
- EPSRC
Awards
1
- EP/K009702/1
@article{Puchberger_2017, title={The noise of many needles: Jerky domain wall propagation in PbZrO3 and LaAlO3}, volume={5}, ISSN={2166-532X}, url={http://dx.doi.org/10.1063/1.4979616}, DOI={10.1063/1.4979616}, number={4}, journal={APL Materials}, publisher={AIP Publishing}, author={Puchberger, S. and Soprunyuk, V. and Schranz, W. and Tröster, A. and Roleder, K. and Majchrowski, A. and Carpenter, M. A. and Salje, E.K.H.}, year={2017}, month=apr }