Riess, Kevin ; Geiger, Philipp T. ; Khansur, Neamul H. ; Steiner, Sebastian ; Frömling, Till ; Hinterstein, Manuel ; Webber, Kyle G. (2019)
Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF.
In: Materialia, 2019 (6)
doi: 10.1016/j.mtla.2019.100297
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The macroscopic ferroelastic behavior of polycrystalline (La 0.6 Sr 0.4)0.95Co0.2Fe0.8O3−d and its dependence on an- nealing conditions was investigated over a temperature range from − 150°C to 150°C. A temperature- and defect concentration-dependent variation of the ferroelastic behavior was attributed to internal stresses, oxygen defi- ciency, and a corresponding change of the crystal structure. In particular, there was an observed decrease in remanent strain and the formation of a closed ferroelastic hysteresis loop at temperatures below approximately 0 °C for samples annealed in air, which was suppressed through the reduction in oxygen vacancies by annealing the samples in oxygen. The macroscopic mechanical behavior as a function of annealing conditions is discussed with respect to the crystal structure and oxygen deficiency determined by means of x-ray and neutron diffraction.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Riess, Kevin ; Geiger, Philipp T. ; Khansur, Neamul H. ; Steiner, Sebastian ; Frömling, Till ; Hinterstein, Manuel ; Webber, Kyle G. |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF |
| Sprache: | Englisch |
| Publikationsjahr: | 29 März 2019 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materialia |
| Jahrgang/Volume einer Zeitschrift: | 2019 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1016/j.mtla.2019.100297 |
| Kurzbeschreibung (Abstract): | The macroscopic ferroelastic behavior of polycrystalline (La 0.6 Sr 0.4)0.95Co0.2Fe0.8O3−d and its dependence on an- nealing conditions was investigated over a temperature range from − 150°C to 150°C. A temperature- and defect concentration-dependent variation of the ferroelastic behavior was attributed to internal stresses, oxygen defi- ciency, and a corresponding change of the crystal structure. In particular, there was an observed decrease in remanent strain and the formation of a closed ferroelastic hysteresis loop at temperatures below approximately 0 °C for samples annealed in air, which was suppressed through the reduction in oxygen vacancies by annealing the samples in oxygen. The macroscopic mechanical behavior as a function of annealing conditions is discussed with respect to the crystal structure and oxygen deficiency determined by means of x-ray and neutron diffraction. |
| Freie Schlagworte: | Perovskite Mechanical properties Ferroelastic X-ray diffraction (XRD) Oxygen deficiency |
| 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: | 29 Mär 2019 09:21 |
| Letzte Änderung: | 29 Mär 2019 09:21 |
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