Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3
| Autor: | Hugh Simons, Ryohei Maruyama, Lukas Porz, Ning Li, Katsuyuki Matsunaga, Till Frömling, Jürgen Janek, Atsutomo Nakamura, Marcus Rohnke, Jürgen Rödel, Peng Gao, Christian Dietz |
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| Rok vydání: | 2020 |
| Předmět: |
Mesoscopic physics
Materials science Condensed matter physics General Engineering Structure (category theory) General Physics and Astronomy 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Space charge 0104 chemical sciences Condensed Matter::Materials Science Electrical resistivity and conductivity visual_art visual_art.visual_art_medium General Materials Science Ceramic Deconvolution Dislocation 0210 nano-technology |
| Zdroj: | ACS Nano. 15:9355-9367 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.0c04491 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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