Voltar
Artigo Revisado por pares
BIBTEX RIS

Electron paramagnetic resonance study of Fe2O3Bi2O3GeO2 glasses

1999; Elsevier BV; Volume: 196-197; Linguagem: Inglês

10.1016/s0304-8853(98)00801-4

ISSN

1873-4766

Autores

I. Ardelean, M. Peteanu, V. Simon, S. Filip, F. Ciorcas, István Sz. Tódor,

Tópico(s)

Pigment Synthesis and Properties

Resumo

Homogeneous glasses of the system xFe2O3·(100 − x)[Bi2O3·GeO2] were obtained within 0 < x ⩽ 20 mol%. EPR absorption spectra due to Fe3+ (3d5) ions show the g ≈ 4.3 line as the main feature. The site symmetry of Fe3+ paramagnetic ions is predominantly rhombic. Mixed valence states of iron ions in samples with x > 5 mol% Fe2O3 were detected.

Referência(s)