Journal article
Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3
Technical University of Darmstadt1
Nagoya University2
Peking University3
Department of Physics, Technical University of Denmark4
Nanomaterials and Devices, Department of Physics, Technical University of Denmark5
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark6
Justus Liebig University Giessen7
The introduction of dislocations is a recently proposed strategy to tailor the functional and especially the electrical properties of ceramics. While several works confirm a clear impact of dislocations on electrical conductivity, some studies raise concern in particular when expanding to dislocation arrangements beyond a geometrically tractable bicrystal interface.
Moreover, the lack of a complete classification on pertinent dislocation characteristics complicates a systematic discussion and hampers the design of dislocation-modified electrical conductivity. We proceed by mechanically introducing dislocations with three different mesoscopic structures into the model material single-crystal SrTiO3 and extensively characterizing them from both a mechanical as well as an electrical perspective.
As a final result, a deconvolution of mesoscopic structure, core structure, and space charge enables us to obtain the complete picture of the effect of dislocations on functional properties, focusing here on electric properties.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2021 |
Pages: | 9355-9367 |
ISSN: | 1936086x and 19360851 |
Types: | Journal article |
DOI: | 10.1021/acsnano.0c04491 |
ORCIDs: | 0000-0003-3163-085X , 0000-0002-8827-1926 , 0000-0002-4324-1512 , 0000-0002-7427-6582 , 0000-0002-3093-9241 , 0000-0002-8867-950X , 0000-0002-9221-4756 and 0000-0002-8975-7741 |
ceramics conductivity dislocations doping one-dimensional oxides plastic deformation