Structural variability of edge dislocations in a SrTiO3 low-angle [001] tilt grain boundary

Buban, J. P. and Chi, M. and Masiel, D. J. and Bradley, A. and Jiang, B. and Stahlberg, H. and Browning, N. D.. (2009) Structural variability of edge dislocations in a SrTiO3 low-angle [001] tilt grain boundary. Journal of Materials Research, 24 (7). pp. 2191-2199.

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Using a spherical aberration (Cs)-corrected scanning transmission electron microscopy (STEM) and electron energy-loss spectroscopy (EELS), we investigated a 6° low-angle [001] tilt grain boundary in SrTiO3. The enhanced spatial resolution of the aberration corrector leads to the observation of a number of structural variations in the edge dislocations along the grain boundary that neither resemble the standard edge dislocations nor partial dislocations for SrTiO3. Although there appear to be many variants in the structure that can be interpreted as compositional effects, three main classes of core structure are found to be prominent. From EELS analysis, these classifications seem to be related to Sr deficiencies, with the final variety of the cores being consistent with an embedded TiOx rocksalt-like structure.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Structural Biology (Stahlberg)
UniBasel Contributors:Stahlberg, Henning
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Cambridge University Press
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:09 Jan 2018 09:14
Deposited On:09 Jan 2018 09:14

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