Direct observation of polar tweed in LaAlO(3)

Polar tweed was discovered in mechanically stressed LaAlO(3). 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 el...

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Autores principales: Salje, Ekhard K. H., Alexe, Marin, Kustov, Sergey, Weber, Mads C., Schiemer, Jason, Nataf, Guillaume F., Kreisel, Jens
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4890045/
https://www.ncbi.nlm.nih.gov/pubmed/27250525
http://dx.doi.org/10.1038/srep27193
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author Salje, Ekhard K. H.
Alexe, Marin
Kustov, Sergey
Weber, Mads C.
Schiemer, Jason
Nataf, Guillaume F.
Kreisel, Jens
author_facet Salje, Ekhard K. H.
Alexe, Marin
Kustov, Sergey
Weber, Mads C.
Schiemer, Jason
Nataf, Guillaume F.
Kreisel, Jens
author_sort Salje, Ekhard K. H.
collection PubMed
description Polar tweed was discovered in mechanically stressed LaAlO(3). 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 LaAlO(3). 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 E(g) soft-mode frequency by Raman spectroscopy.
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spelling pubmed-48900452016-06-09 Direct observation of polar tweed in LaAlO(3) Salje, Ekhard K. H. Alexe, Marin Kustov, Sergey Weber, Mads C. Schiemer, Jason Nataf, Guillaume F. Kreisel, Jens Sci Rep Article Polar tweed was discovered in mechanically stressed LaAlO(3). 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 LaAlO(3). 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 E(g) soft-mode frequency by Raman spectroscopy. Nature Publishing Group 2016-06-02 /pmc/articles/PMC4890045/ /pubmed/27250525 http://dx.doi.org/10.1038/srep27193 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Salje, Ekhard K. H.
Alexe, Marin
Kustov, Sergey
Weber, Mads C.
Schiemer, Jason
Nataf, Guillaume F.
Kreisel, Jens
Direct observation of polar tweed in LaAlO(3)
title Direct observation of polar tweed in LaAlO(3)
title_full Direct observation of polar tweed in LaAlO(3)
title_fullStr Direct observation of polar tweed in LaAlO(3)
title_full_unstemmed Direct observation of polar tweed in LaAlO(3)
title_short Direct observation of polar tweed in LaAlO(3)
title_sort direct observation of polar tweed in laalo(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4890045/
https://www.ncbi.nlm.nih.gov/pubmed/27250525
http://dx.doi.org/10.1038/srep27193
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