Djenadic, Ruzica ; Sarkar, Abhishek ; Clemens, Oliver ; Loho, Christoph ; Botros, Miriam ; Chakravadhanula, Venkata S. K. ; Kübel, Christian ; Bhattacharya, Subramshu S. ; Gandhi, Ashutosh S. ; Hahn, Horst (2017)
Multicomponent equiatomic rare earth oxides.
In: Materials Research Letters, 5 (2)
doi: 10.1080/21663831.2016.1220433
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Multicomponent rare earth oxide (REO) nanocrystalline powders containing up to seven equiatomic rare earth elements were successfully synthesized in a single-phase CaF2-type (Fm-3 m) structure. The addition of more than six elements resulted in the formation of a secondary phase. Annealing at 1000°C for 1 h led to the formation of a single-phase (Ia-3) even in the 7-component system. In the absence of cerium (Ce4+), secondary phases were observed irrespective of the number of cations or the extent of thermal treatment indicating that cerium cations played a crucial role in stabilizing the multicomponent REOs into a phase pure structure.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Djenadic, Ruzica ; Sarkar, Abhishek ; Clemens, Oliver ; Loho, Christoph ; Botros, Miriam ; Chakravadhanula, Venkata S. K. ; Kübel, Christian ; Bhattacharya, Subramshu S. ; Gandhi, Ashutosh S. ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Multicomponent equiatomic rare earth oxides |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Verlag: | Taylor Francis |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Research Letters |
| Jahrgang/Volume einer Zeitschrift: | 5 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1080/21663831.2016.1220433 |
| Kurzbeschreibung (Abstract): | Multicomponent rare earth oxide (REO) nanocrystalline powders containing up to seven equiatomic rare earth elements were successfully synthesized in a single-phase CaF2-type (Fm-3 m) structure. The addition of more than six elements resulted in the formation of a secondary phase. Annealing at 1000°C for 1 h led to the formation of a single-phase (Ia-3) even in the 7-component system. In the absence of cerium (Ce4+), secondary phases were observed irrespective of the number of cations or the extent of thermal treatment indicating that cerium cations played a crucial role in stabilizing the multicomponent REOs into a phase pure structure. |
| Freie Schlagworte: | rare earth oxide, entropy, single phase, nanocrystalline |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialdesign durch Synthese 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 22 Mär 2017 10:11 |
| Letzte Änderung: | 22 Mär 2017 10:11 |
| PPN: | |
| Sponsoren: | The authors would like to thank the Karlsruhe Nano Micro Facility (KNMF) for the access to the electron microscopy and spectroscopy unit. |
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