Optical and Structural Studies of Mn2+ Doped SbPO4-ZnO-PbO Glasses
AUTOR(ES)
Manzan, Renata S., Donoso, José P., Magon, Claudio J., Silva, Igor d'Anciães A., Rüssel, Christian, Nalin, Marcelo
FONTE
J. Braz. Chem. Soc.
DATA DE PUBLICAÇÃO
2015-12
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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