Szczegóły publikacji
Opis bibliograficzny
XAS study of Ru doped n=1, 2 Ruddlesden-Popper manganites / M. SIKORA, C. J. OATES, W. SZCZERBA, Cz. KAPUSTA, J. ŻUKROWSKI, D. ZAJĄC, M. BOROWIEC, R. Ruiz-Bustos, P. D. Battle, M. J. Rosseinsky // Journal of Alloys and Compounds ; ISSN 0925-8388. — 2007 — vol. 442 iss. 1–2, s. 265–267. — Bibliogr. s. 267, Abstr. — 15th International conference on Solid compounds of transition elements SCTE2006 : Krakow, Poland, 15–20 July 2006
Autorzy (10)
- AGHSikora Marcin
- AGHOates Colin J.
- AGHSzczerba Wojciech
- AGHKapusta Czesław
- AGHŻukrowski Jan
- AGHZając Dariusz
- AGHBorowiec Marta
- Ruiz-Bustos R.
- Battle Peter D.
- Rosseinsky M. J.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 36430 |
|---|---|
| Data dodania do BaDAP | 2008-01-19 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jallcom.2006.06.115 |
| Rok publikacji | 2007 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Alloys and Compounds |
Abstract
We report on the results of X-ray absorption near edge structure (XANES) studies at the Mn:L-2,L-3, Ru:K and O:K edges of novel manganites, Sr2Mn0.5Ru0.5O4 and Sr3MnRuO7- Measurements were carried out on polycrystalline powder samples at room temperature. From the analysis of the XANES spectra the average manganese valences of 3.4 in bilayer Sr3MnRuO7 and 3.1 in single layer Sr2Mn0.5Ru0.5O4 are obtained. The corresponding average valences for Ru ions are 4.6 and 4.9, respectively. This indicates that Ru doping gives rise to a decrease of Mn valence, whereas Ru valence increases, compared to Mn(IV) and Ru(IV) in undoped compounds. The effect of charge disproportionation is stronger in the single layered compound than in the bilayered one.