Osten, Felix L. ; Panthöfer, Martin ; Ksenofontov, Vadim ; Möller, Angela (2022)
Site‐Preferences in the Mixed‐Valent Series FeMo1−nVnO4: Controlling the Formation of the α‐Polymorph and the Charge Localization.
In: Zeitschrift für anorganische und allgemeine Chemie, 648 (24)
doi: 10.1002/zaac.202200281
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The mixed-valent, solid solution series FeMo₁₋ₙVₙO₄ (0≤n≤0.3) was synthesized and characterized by x-ray diffraction, and thermal analysis. Assignments of individual Fe-species stem from ⁵⁷Fe-Mössbauer spectroscopy and DFT-calculations of the electric field gradients. The incorporation of smaller ions (FeIII, VV) represents an internal “chemical pressure” effect stabilizing the low-temperature α-polymorph with increasing n. The site-preference and distribution of vanadium on individual Mo-sites impacts the α→β transition temperatures around 650 K, and causes distinct differences in charge mobility in this hole-doped semiconductor around 225 K. We assign the charge localization in α-FeMo₁₋ₙVₙO₄ to enhanced electron-phonon coupling within a polaronic scenario
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Osten, Felix L. ; Panthöfer, Martin ; Ksenofontov, Vadim ; Möller, Angela |
| Art des Eintrags: | Bibliographie |
| Titel: | Site‐Preferences in the Mixed‐Valent Series FeMo1−nVnO4: Controlling the Formation of the α‐Polymorph and the Charge Localization |
| Sprache: | Englisch |
| Publikationsjahr: | 16 September 2022 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Zeitschrift für anorganische und allgemeine Chemie |
| Jahrgang/Volume einer Zeitschrift: | 648 |
| (Heft-)Nummer: | 24 |
| Kollation: | 8 Seiten |
| DOI: | 10.1002/zaac.202200281 |
| Kurzbeschreibung (Abstract): | The mixed-valent, solid solution series FeMo₁₋ₙVₙO₄ (0≤n≤0.3) was synthesized and characterized by x-ray diffraction, and thermal analysis. Assignments of individual Fe-species stem from ⁵⁷Fe-Mössbauer spectroscopy and DFT-calculations of the electric field gradients. The incorporation of smaller ions (FeIII, VV) represents an internal “chemical pressure” effect stabilizing the low-temperature α-polymorph with increasing n. The site-preference and distribution of vanadium on individual Mo-sites impacts the α→β transition temperatures around 650 K, and causes distinct differences in charge mobility in this hole-doped semiconductor around 225 K. We assign the charge localization in α-FeMo₁₋ₙVₙO₄ to enhanced electron-phonon coupling within a polaronic scenario |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 1487: Eisen, neu gedacht! |
| Hinterlegungsdatum: | 09 Nov 2023 08:06 |
| Letzte Änderung: | 09 Nov 2023 08:06 |
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