Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3
Source abstract
Abstract
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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Advanced Memory and Neural Computing · Ferroelectric and Negative Capacitance Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials and Earth Science, Technical University of Darmstadt, Alarich-Weiss-Straße 2, 64287 Darmstadt, Germany
Department of Materials Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
PRESTO, Japan Science and Technology Agency (JST), 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
School of Physics, Peking University, Haidian District, Beijing 100871, China
Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
Institute of Physical Chemistry and Center for Materials Research, Justus Liebig University Gießen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
Funding
Deutsche Forschungsgemeinschaft · Japan Society for the Promotion of Science · Japan Science and Technology Agency · National Natural Science Foundation of China
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