Optical and structural studies of Mn2+ doped SbPO4-ZnO-PbO glasses
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Data
2015-12-01
Autores
Manzan, Renata S. [UNESP]
Donoso, José P.
Magon, Claudio J.
Silva, Igor D'Anciães A.
Rüssel, Christian
Nalin, Marcelo [UNESP]
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Resumo
New glass compositions in the system 1 - x(SbPO4-ZnO-PbO)-xMnO (with 0 ≤ x ≤ 20 in mol%) were prepared by melt-quenching methodology. Thermal, structural and optical properties of the new glasses were systematically studied by means of differential scanning calorimetry (DSC), UV-Vis and Raman spectroscopy, fluorescence and electronic paramagnetic resonance (EPR). The addition of MnO increases the thermal stability of the glasses with Tx - Tg close to 140 oC for higher Mn contents. EPR measurements show that Mn2+ ions are in octahedral arrangement which is in agreement with UV-Vis and luminescence results. Samples present red luminescence when excited with 408 nm source.
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Antimony glasses, Luminescence, Manganese, Structure
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Journal of the Brazilian Chemical Society, v. 26, n. 12, p. 2607-2614, 2015.