Szczegóły publikacji
Opis bibliograficzny
Understanding the Mössbauer spectrum of magnetite below the Verwey transition: Ab initio calculations, simulation, and experiment / R. Řezníček, V. Chlan, H. Štĕpánková, P. Novák, J. ŻUKROWSKI, A. KOZŁOWSKI, Z. KĄKOL, Z. TARNAWSKI, J. M. Honig // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2017 — vol. 96 iss. 19, s. 195124-1–195124-10. — Bibliogr. s. 195124-10
Autorzy (9)
- Řezniček Richard
- Chlan Vojtěch
- Stěpánková Helena
- Novak Paweł
- AGHŻukrowski Jan
- AGHKozłowski Andrzej
- AGHKąkol Zbigniew
- AGHTarnawski Zbigniew
- Honig Jurgen M.
Dane bibliometryczne
| ID BaDAP | 110273 |
|---|---|
| Data dodania do BaDAP | 2017-12-20 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.96.195124 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
Magnetite is often the subject of Mössbauer spectroscopy experiments either as a part of fundamental research of this compound or during various geological studies. However, the complicated structure of the low-temperature phase of magnetite exhibits 24 crystallographic iron sites, which presents a considerable obstruction for spectrum interpretation. In this work, we carried out ab initio calculations to obtain a complete set of hyperfine parameters of all the sites, and we used these parameters to simulate the corresponding Mössbauer spectrum. Simulation analysis suggested an approximation of the spectrum by four sextets. Parameters of these four sextets were calculated, and the approximation was shown to be appropriate. Further, the Mössbauer spectrum of a high-quality synthetic single crystal of magnetite was measured at 4 K, allowing for a comparison of the theoretical results with the experimental data. Finally, the four-sextet approximation was successfully applied to fit the measured spectrum.
