Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-8690
Authors: | Osten, Felix L. Panthöfer, Martin Ksenofontov, Vadim Möller, Angela |
Title: | Site-preferences in the mixed-valent series FeMo1−nVnO4 : controlling the formation of the α-polymorph and the charge localization |
Online publication date: | 30-Jan-2023 |
Year of first publication: | 2022 |
Language: | english |
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. |
DDC: | 540 Chemie 540 Chemistry and allied sciences |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 09 Chemie, Pharmazie u. Geowissensch. |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-8690 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
License: | CC BY-NC-ND |
Information on rights of use: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Journal: | Zeitschrift für anorganische und allgemeine Chemie 648 24 |
Pages or article number: | e202200281 |
Publisher: | Wiley Weinheim |
Issue date: | 2022 |
ISSN: | 1521-3749 |
Publisher DOI: | 10.1002/zaac.202200281 |
Appears in collections: | DFG-491381577-H |
Files in This Item:
File | Description | Size | Format | ||
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![]() | sitepreferences_in_the_mixedv-20230127150352732.pdf | 2.89 MB | Adobe PDF | View/Open |