Manzan, Renata S.
Donoso, Jose P.
Magon, Claudio J.
Silva, Igor d'Anciaes A.
Número total de Autores: 6
Afiliação do(s) autor(es):
 Univ Fed Sao Carlos UFSCar, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil
 Univ Estadual Paulista Julio de Mesquita Filho Un, Inst Quim, Lab Vidros Especiais LAViE, BR-14800060 Araraquara, SP - Brazil
 Univ Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
 Univ Jena, Otto Schott Inst Mat Res, D-07743 Jena - Germany
Número total de Afiliações: 4
Tipo de documento:
Journal of the Brazilian Chemical Society;
Citações Web of Science:
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 degrees C 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. (AU)