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Direct observation of polar tweed in LaAlO3
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Salje, Ekhard K. H., Alexe, M. (Marin), Kustov, Sergey, Weber, Mads C., Schiemer, Jason, Nataf, Guillaume F. and Kreisel, Jens (2016) Direct observation of polar tweed in LaAlO3. Scientific Reports, 6 . pp. 1-8. 27193. doi:10.1038/srep27193
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Official URL: http://dx.doi.org/10.1038/srep27193
Abstract
Polar tweed was discovered in mechanically stressed LaAlO3. Local patches of strained material (diameter ca. 5 μm) form interwoven patterns seen in birefringence images, Piezo-Force Microscopy (PFM) and Resonant Piezoelectric Spectroscopy (RPS). PFM and RPS observations prove unequivocally that electrical polarity exists inside the tweed patterns of LaAlO3. The local piezoelectric effect varies greatly within the tweed patterns and reaches magnitudes similar to quartz. The patterns were mapped by the shift of the Eg soft-mode frequency by Raman spectroscopy.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
| Divisions: | Faculty of Science > Physics | ||||||||
| Library of Congress Subject Headings (LCSH): | Piezoelectric devices | ||||||||
| Journal or Publication Title: | Scientific Reports | ||||||||
| Publisher: | Nature Publishing Group | ||||||||
| ISSN: | 2045-2322 | ||||||||
| Official Date: | 2 May 2016 | ||||||||
| Dates: |
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| Date of first compliant deposit: | 4 August 2016 | ||||||||
| Volume: | 6 | ||||||||
| Number of Pages: | 8 | ||||||||
| Page Range: | pp. 1-8 | ||||||||
| Article Number: | 27193 | ||||||||
| DOI: | 10.1038/srep27193 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Fonds national de la recherche Luxembourg, Spain. Ministerio de Economía y Competitividad [Ministry of Economy and Competitiveness] (MINECO), European Regional Development Fund (ERDF) | ||||||||
| Grant number: | EP/K009702/1 (EPSRC), INTER/MOBILITY/13/6572599, FNR/P12/4853155/Kreisel, MAT 2014-56116-C4-1-R | ||||||||
| Adapted As: |
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