Porz, Lukas ; Frömling, Till ; Nakamura, Atsutomo ; Li, Ning ; Maruyama, Ryohei ; Matsunaga, Katsuyuki ; Gao, Peng ; Simons, Hugh ; Dietz, Christian ; Rohnke, Marcus ; Janek, Jürgen ; Rödel, Jürgen (2021)
Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3.
In: ACS Nano, 15 (6)
doi: 10.1021/acsnano.0c04491
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Porz, Lukas ; Frömling, Till ; Nakamura, Atsutomo ; Li, Ning ; Maruyama, Ryohei ; Matsunaga, Katsuyuki ; Gao, Peng ; Simons, Hugh ; Dietz, Christian ; Rohnke, Marcus ; Janek, Jürgen ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3 |
| Sprache: | Englisch |
| Publikationsjahr: | 22 November 2021 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ACS Nano |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1021/acsnano.0c04491 |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | dislocations, plastic deformation, one-dimensional, conductivity, doping, ceramics, oxides |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces |
| Hinterlegungsdatum: | 23 Jun 2021 05:43 |
| Letzte Änderung: | 12 Okt 2021 13:01 |
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