Trapp, Maximilian ; Keil, Peter ; Frömling, Till ; Rödel, Jürgen ; Kleebe, Hans-Joachim (2020)
Segregation and properties at curved vs straight (0001) inversion
boundaries in piezotronic ZnO bicrystals.
In: Journal of the American Ceramic Society, 103 (4)
doi: 10.1111/jace.16912
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
TEM and SEM investigations of ZnO bicrystal interfaces were undertaken with an aim to study the correlation of local grain-boundary structure, segregation, and electrical transport perpendicular to the interface. To this end, varistor-like ZnO bicrystals with piezotronic characteristics were chosen with (0001)║(0001) tail-to-tail orientation with respect to the c-axis. In order to contrast different local grain-boundary structures with different coherency and segregation of bismuth, but identical macroscopic polarization state, two complementary processing techniques were applied. A diffusion-bonded bicrystal with an intermediate thin film containing Zn–Bi–Co–O provided a straight interface as reference. In contrast, a ZnO bicrystal prepared by epitaxial solid-state transformation was manufactured by bonding two ZnO single crystals with a 100 μm thick polycrystalline ZnO varistor material with a typical dopant composition including bismuth and cobalt. This structure was annealed to the point that a bicrystal was formed with the varistor concentration at the boundary,which was strongly curved due to the polycrystalline microstructure still providing a shadow image at the interface. The results highlight a distinct correlation between local interfacial morphology, degree of segregation of bismuth, and degree of nonlinearity of the electrical transport across the interface.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Trapp, Maximilian ; Keil, Peter ; Frömling, Till ; Rödel, Jürgen ; Kleebe, Hans-Joachim |
| Art des Eintrags: | Bibliographie |
| Titel: | Segregation and properties at curved vs straight (0001) inversion boundaries in piezotronic ZnO bicrystals |
| Sprache: | Englisch |
| Publikationsjahr: | April 2020 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 103 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1111/jace.16912 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | TEM and SEM investigations of ZnO bicrystal interfaces were undertaken with an aim to study the correlation of local grain-boundary structure, segregation, and electrical transport perpendicular to the interface. To this end, varistor-like ZnO bicrystals with piezotronic characteristics were chosen with (0001)║(0001) tail-to-tail orientation with respect to the c-axis. In order to contrast different local grain-boundary structures with different coherency and segregation of bismuth, but identical macroscopic polarization state, two complementary processing techniques were applied. A diffusion-bonded bicrystal with an intermediate thin film containing Zn–Bi–Co–O provided a straight interface as reference. In contrast, a ZnO bicrystal prepared by epitaxial solid-state transformation was manufactured by bonding two ZnO single crystals with a 100 μm thick polycrystalline ZnO varistor material with a typical dopant composition including bismuth and cobalt. This structure was annealed to the point that a bicrystal was formed with the varistor concentration at the boundary,which was strongly curved due to the polycrystalline microstructure still providing a shadow image at the interface. The results highlight a distinct correlation between local interfacial morphology, degree of segregation of bismuth, and degree of nonlinearity of the electrical transport across the interface. |
| Freie Schlagworte: | Bicrystal, interfaces, segregation, transmission electron microscopy, varistors, zinc oxide |
| 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 |
| Hinterlegungsdatum: | 06 Feb 2020 06:59 |
| Letzte Änderung: | 03 Jul 2024 02:43 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Segregation and properties at curved vs straight (0001) inversion
boundaries in piezotronic ZnO bicrystals. (deposited 25 Mär 2022 13:23)
- Segregation and properties at curved vs straight (0001) inversion boundaries in piezotronic ZnO bicrystals. (deposited 06 Feb 2020 06:59) [Gegenwärtig angezeigt]
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