Trapp, Maximilian ; Keil, Peter ; Frömling, Till ; Rödel, Jürgen ; Kleebe, Hans‐Joachim (2022)
Segregation and properties at curved vs straight (0001) inversion
boundaries in piezotronic ZnO bicrystals.
In: Journal of the American Ceramic Society, 2020, 103 (4)
doi: 10.26083/tuprints-00020195
Artikel, Zweitveröffentlichung, Verlagsversion
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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 elec-trical transport perpendicular to the interface. To this end, varistor-like ZnO bicrystals with piezotronic characteristics were chosen with (0001)║(0001) tail-to-tail orienta-tion with respect to the c-axis. In order to contrast different local grain-boundary structures with different coherency and segregation of bismuth, but identical macro-scopic 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 non-linearity of the electrical transport across the interface.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Trapp, Maximilian ; Keil, Peter ; Frömling, Till ; Rödel, Jürgen ; Kleebe, Hans‐Joachim |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Segregation and properties at curved vs straight (0001) inversion boundaries in piezotronic ZnO bicrystals |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2020 |
| Verlag: | American Ceramic Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 103 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.26083/tuprints-00020195 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20195 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| 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 elec-trical transport perpendicular to the interface. To this end, varistor-like ZnO bicrystals with piezotronic characteristics were chosen with (0001)║(0001) tail-to-tail orienta-tion with respect to the c-axis. In order to contrast different local grain-boundary structures with different coherency and segregation of bismuth, but identical macro-scopic 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 non-linearity of the electrical transport across the interface. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-201954 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 25 Mär 2022 13:23 |
| Letzte Änderung: | 28 Mär 2022 06:21 |
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- Segregation and properties at curved vs straight (0001) inversion boundaries in piezotronic ZnO bicrystals. (deposited 25 Mär 2022 13:23) [Gegenwärtig angezeigt]
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