Wollstadt, Stephan ; Ikeda, Yuji ; Sarkar, Abhishek ; Vasala, Sami ; Fasel, Claudia ; Alff, Lambert ; Kruk, Robert ; Grabowski, Blazej ; Clemens, Oliver (2021)
Structural and Magnetic Properties of BaFeO2.667 Synthesized by Oxidizing BaFeO2.5 Obtained via Nebulized Spray Pyrolysis.
In: Inorganic Chemistry, 60 (15)
doi: 10.1021/acs.inorgchem.1c00434
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A vacancy-ordered perovskite-type compound Ba3Fe3O8 (BaFeO2.667) was prepared by oxidizing BaFeO2.5 (P21/c) with the latter compound obtained by a spray pyrolysis technique. The structure of Ba3Fe3O8 was found to be isotypic to Ba3Fe3O7F (P21/m) and can be written as Ba3Fe3+2Fe4+1O8. Mossbauer spectroscopy and ab initio calculations were used to confirm mixed iron oxidation states, showing allocation of the tetravalent iron species on the tetrahedral site, and octahedral as well as square pyramidal coordination for the trivalent species within a G-type antiferromagnetic ordering. The uptake and release of oxygen were investigated over a broad temperature range from room temperature to 1100 °C under pure oxygen and ambient atmosphere via a combination of DTA/TG and variable temperature diffraction measurements. The compound exhibited a strong lattice enthalpy driven reduction to monoclinic and cubic BaFeO2.5 at elevated temperatures.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Wollstadt, Stephan ; Ikeda, Yuji ; Sarkar, Abhishek ; Vasala, Sami ; Fasel, Claudia ; Alff, Lambert ; Kruk, Robert ; Grabowski, Blazej ; Clemens, Oliver |
| Art des Eintrags: | Bibliographie |
| Titel: | Structural and Magnetic Properties of BaFeO2.667 Synthesized by Oxidizing BaFeO2.5 Obtained via Nebulized Spray Pyrolysis |
| Sprache: | Englisch |
| Publikationsjahr: | 2 August 2021 |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Inorganic Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 60 |
| (Heft-)Nummer: | 15 |
| DOI: | 10.1021/acs.inorgchem.1c00434 |
| Kurzbeschreibung (Abstract): | A vacancy-ordered perovskite-type compound Ba3Fe3O8 (BaFeO2.667) was prepared by oxidizing BaFeO2.5 (P21/c) with the latter compound obtained by a spray pyrolysis technique. The structure of Ba3Fe3O8 was found to be isotypic to Ba3Fe3O7F (P21/m) and can be written as Ba3Fe3+2Fe4+1O8. Mossbauer spectroscopy and ab initio calculations were used to confirm mixed iron oxidation states, showing allocation of the tetravalent iron species on the tetrahedral site, and octahedral as well as square pyramidal coordination for the trivalent species within a G-type antiferromagnetic ordering. The uptake and release of oxygen were investigated over a broad temperature range from room temperature to 1100 °C under pure oxygen and ambient atmosphere via a combination of DTA/TG and variable temperature diffraction measurements. The compound exhibited a strong lattice enthalpy driven reduction to monoclinic and cubic BaFeO2.5 at elevated temperatures. |
| Freie Schlagworte: | Chemical structure, Magnetic properties, Oxygen, Iron, Diffraction |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialdesign durch Synthese 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien |
| TU-Projekte: | DFG|CL551/2-1|Topochmische Fluorie DFG|CL551/2-1|3. FA Topochemische |
| Hinterlegungsdatum: | 26 Aug 2021 05:50 |
| Letzte Änderung: | 26 Aug 2021 05:50 |
| PPN: | |
| Projekte: | German Research Foundation (DFG), Grant Number CL551/2-1, German Research Foundation (DFG), Grant Number INST 40/575-1 FUGG, State of Baden-Württemberg, bwHPC, European Research Council (ERC), European Union’s Horizon 2020 research and innovation programme, Grant Number 865855 |
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