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20-11-2018 | Ceramics

Characterization of grain boundary disconnections in SrTiO₃ Part II: the influence of superimposed disconnections on image analysis

Authors: Hadas Sternlicht, Wolfgang Rheinheimer, Judy Kim, Emanuela Liberti, Angus I. Kirkland, Michael J. Hoffmann, Wayne D. Kaplan

Published in: Journal of Materials Science | Issue 5/2019

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Abstract

Disconnections were recently shown to play a role in the mechanism of grain boundary motion in general grain boundaries in SrTiO₃. In this work, we demonstrate the existence of disconnections in the viewing direction along the projected thickness of transmission electron microscopy samples and characterize possible aspects of the structure of these disconnections. We show that the presence of steps along the viewing direction may result in the appearance of a disordered region at the boundary, while it is actually composed of ordered crystalline material. We discuss the subsequent complications in analysis of transmission electron microscopy data and strict meaning of the term “edge-on” for grain boundaries.

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Title: Characterization of grain boundary disconnections in SrTiO3 Part II: the influence of superimposed disconnections on image analysis
Authors: Hadas Sternlicht
Wolfgang Rheinheimer
Judy Kim
Emanuela Liberti
Angus I. Kirkland
Michael J. Hoffmann
Wayne D. Kaplan
Publication date: 20-11-2018
Publisher: Springer US
Published in: Journal of Materials Science / Issue 5/2019
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-018-3095-5

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