Sarkar, Abhishek ; Djenadic, Ruzica ; Wang, Di ; Hein, Christina ; Kautenburger, Ralf ; Clemens, Oliver ; Hahn, Horst (2018)
Rare earth and transition metal based entropy stabilised perovskite type oxides.
In: Journal of the European Ceramic Society, 38 (5)
doi: 10.1016/j.jeurceramsoc.2017.12.058
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Multicomponent oxides with perovskite type of structure containing up to 10 different cations in equiatomic amounts have been synthesised for the first time. Out of eleven systems synthesised, only six systems crystallised as single phase perovskite type compounds with random and homogenous cation distribution on the respective sites. The formation of phase pure 10-cationic system, (Gd0.2La0.2Nd0.2Sm0.2Y0.2)(Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)O3, in contrast to the multiphase mixtures observed in five of the lower entropy systems (containing 6 cations) indicates a possible role of entropy in the stabilisation of a single phase crystal structure. The entropy driven structural stabilisation effect is further supported by the reversible phase transformation, from single phase to multiple phase upon cyclic heat treatment, observed in the (Gd0.2La0.2Nd0.2Sm0.2Y0.2)MnO3 system. This type of entropic signature has been observed in rocksalt based high entropy oxide systems. However, it has not been reported before for perovskite based compounds, as shown in this study.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Sarkar, Abhishek ; Djenadic, Ruzica ; Wang, Di ; Hein, Christina ; Kautenburger, Ralf ; Clemens, Oliver ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Rare earth and transition metal based entropy stabilised perovskite type oxides |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2018 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 38 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1016/j.jeurceramsoc.2017.12.058 |
| URL / URN: | https://doi.org/10.1016/j.jeurceramsoc.2017.12.058 |
| Kurzbeschreibung (Abstract): | Multicomponent oxides with perovskite type of structure containing up to 10 different cations in equiatomic amounts have been synthesised for the first time. Out of eleven systems synthesised, only six systems crystallised as single phase perovskite type compounds with random and homogenous cation distribution on the respective sites. The formation of phase pure 10-cationic system, (Gd0.2La0.2Nd0.2Sm0.2Y0.2)(Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)O3, in contrast to the multiphase mixtures observed in five of the lower entropy systems (containing 6 cations) indicates a possible role of entropy in the stabilisation of a single phase crystal structure. The entropy driven structural stabilisation effect is further supported by the reversible phase transformation, from single phase to multiple phase upon cyclic heat treatment, observed in the (Gd0.2La0.2Nd0.2Sm0.2Y0.2)MnO3 system. This type of entropic signature has been observed in rocksalt based high entropy oxide systems. However, it has not been reported before for perovskite based compounds, as shown in this study. |
| Freie Schlagworte: | Spray pyrolysis, Multicomponent equiatomic perovskites, High entropy oxides, Structural distortion |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialdesign durch Synthese 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien |
| Hinterlegungsdatum: | 12 Dez 2018 08:59 |
| Letzte Änderung: | 12 Dez 2018 08:59 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum