EPR and magnetic susceptibility studies of iron ions in 70TeO2·25B2O3·5PbO glass matrix

Autor:	S. Filip, M. Peteanu, Viorica Simon, I. Ardelean, G. Györffy
Rok vydání:	1997
Předmět:	Valence (chemistry) Chemistry Analytical chemistry General Chemistry Condensed Matter Physics Glass matrix Magnetic susceptibility Spectral line Ion law.invention Paramagnetism Nuclear magnetic resonance law Materials Chemistry Curie constant Electron paramagnetic resonance
Zdroj:	Solid State Communications. 102:341-346
ISSN:	0038-1098
DOI:	10.1016/s0038-1098(96)00772-7
Popis:	Results of EPR and magnetic susceptibility measurements performed on xFe2O3·(1 − x)[70TeO2·25B2O3·5PbO] glasses with 0 1 mol.%. The spectra of the investigated glasses containing up to 3 mol.% Fe2O3 presents in addition to the line at g ≈ 4.3 also a weak resonance line at g ≈ 9.79 that denotes the rhombic character of the structural units involving the resonance centers. The paramagnetic resonance data consists with those obtained from magnetic measurements. The Curie constant values indicate that in this glass system the iron ions are in both Fe3+ and Fe2+ valence state, the last one representing about 56% from the total iron ions content. For x ≥ 1 mol.% a mictomagnetic type order was evidenced.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::50916e8147cc208993931cbde24254d0 https://doi.org/10.1016/s0038-1098(96)00772-7 Zobrazit plný text záznamu Full Text from ScienceDirect