Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem
The microstructure and composition of a single crystal of the relaxor Sr0.67Ba0.33Nb2O6 have been assessed by aberration corrected TEM. Electron diffraction showed the presence of diffuse intensity and superstructure incommensurate reflections, compatible with Sr vacancies and Sr/Ba mixing at specif...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-10-01
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| Series: | Results in Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590048X1930038X |
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| author | L. López-Conesa J.M. Rebled A. Ruiz-Caridad A. Torres-Pardo M.L. Ruiz-González J.M. González-Calbet G. Dezanneau S. Estradé F. Peiró |
| author_facet | L. López-Conesa J.M. Rebled A. Ruiz-Caridad A. Torres-Pardo M.L. Ruiz-González J.M. González-Calbet G. Dezanneau S. Estradé F. Peiró |
| author_sort | L. López-Conesa |
| collection | DOAJ |
| description | The microstructure and composition of a single crystal of the relaxor Sr0.67Ba0.33Nb2O6 have been assessed by aberration corrected TEM. Electron diffraction showed the presence of diffuse intensity and superstructure incommensurate reflections, compatible with Sr vacancies and Sr/Ba mixing at specific crystal sites respectively. Atomic resolution high angle annular dark field imaging confirmed the presence of these cation vacancies and electron energy loss spectroscopy demonstrated the random mixing of Ba and Sr. Unveiling structure and chemistry with this unprecedent spatial resolution gives the necessary understanding of the electric charge disorder at the origin of polar nanodomains, ultimately leading to relaxor behaviour. |
| first_indexed | 2024-12-21T06:04:10Z |
| format | Article |
| id | doaj.art-1172fc3cbf2940568c2af5a796d0e1b1 |
| institution | Directory Open Access Journal |
| issn | 2590-048X |
| language | English |
| last_indexed | 2024-12-21T06:04:10Z |
| publishDate | 2019-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Materials |
| spelling | doaj.art-1172fc3cbf2940568c2af5a796d0e1b12022-12-21T19:13:41ZengElsevierResults in Materials2590-048X2019-10-013100038Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stemL. López-Conesa0J.M. Rebled1A. Ruiz-Caridad2A. Torres-Pardo3M.L. Ruiz-González4J.M. González-Calbet5G. Dezanneau6S. Estradé7F. Peiró8Laboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, C/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain; Centres Científics i Tecnològics de La Universitat de Barcelona (CCiTUB), C/ Lluís Solé i Sabarís S/n, 08028, Barcelona, Spain; Corresponding author. Laboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, c/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain.Laboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, C/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain; Centres Científics i Tecnològics de La Universitat de Barcelona (CCiTUB), C/ Lluís Solé i Sabarís S/n, 08028, Barcelona, SpainLaboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, C/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, Spain; Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, C2N - Orsay, 91405, Orsay Cedex, FranceDepartamento de Química Inorgánica, Facultad de CC. Químicas, Universidad Complutense de Madrid, 28040, Madrid, SpainDepartamento de Química Inorgánica, Facultad de CC. Químicas, Universidad Complutense de Madrid, 28040, Madrid, SpainDepartamento de Química Inorgánica, Facultad de CC. Químicas, Universidad Complutense de Madrid, 28040, Madrid, SpainLaboratoire SPMS, Ecole Centrale Paris, Grande Voie des Vignes, 92295, Châtenay-Malabry Cedex, FranceLaboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, C/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, SpainLaboratory of Electron Nanoscopy (LENS-MIND), Department of Electronic and Biomedical Engineering, University of Barcelona, C/ Martí i Franqués 1, Barcelona, 08028, Catalonia, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028, Barcelona, SpainThe microstructure and composition of a single crystal of the relaxor Sr0.67Ba0.33Nb2O6 have been assessed by aberration corrected TEM. Electron diffraction showed the presence of diffuse intensity and superstructure incommensurate reflections, compatible with Sr vacancies and Sr/Ba mixing at specific crystal sites respectively. Atomic resolution high angle annular dark field imaging confirmed the presence of these cation vacancies and electron energy loss spectroscopy demonstrated the random mixing of Ba and Sr. Unveiling structure and chemistry with this unprecedent spatial resolution gives the necessary understanding of the electric charge disorder at the origin of polar nanodomains, ultimately leading to relaxor behaviour.http://www.sciencedirect.com/science/article/pii/S2590048X1930038XRelaxorsTEMSAEDEELS |
| spellingShingle | L. López-Conesa J.M. Rebled A. Ruiz-Caridad A. Torres-Pardo M.L. Ruiz-González J.M. González-Calbet G. Dezanneau S. Estradé F. Peiró Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem Results in Materials Relaxors TEM SAED EELS |
| title | Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem |
| title_full | Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem |
| title_fullStr | Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem |
| title_full_unstemmed | Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem |
| title_short | Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem |
| title_sort | cation disorder in sr0 67ba0 33nb2o6 assessed by aberration corrected stem |
| topic | Relaxors TEM SAED EELS |
| url | http://www.sciencedirect.com/science/article/pii/S2590048X1930038X |
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