M. Elisa, B. A. Sava, R. Iordanescu, I. Feraru, C. Vasiliu, M. Calin, A. Diaconu, L. D. Ursu, L. Boroica, Z. Plaiasu, F. Nastase, C. Nastase, A. Dumitru, Obtaining and characterization of calcium/magnesium/iron lithium phosphate glasses, Optoelectron. Adv. Mater. – Rapid Comm., 4/9 (2010) 1301-1303.

Title: Obtaining and characterization of calcium/magnesium/iron lithium phosphate glasses

Abstract: The paper reports a study on lithium phosphate glasses, containing calcium or magnesium and ferric/ferrous oxides. Iron oxides provide high chemical stability against water and enhance the glass capacity to embed different chemical compounds. The wet synthesis method provides an enhanced homogeneity of the glass batch and improves the optical quality of the glass samples. FTIR and Raman spectroscopy revealed the network former role of P(2)O(5) as well as the modifier/former role of iron. The vibration mode shifted at 1250 cm(-1) is attributed to the iron that enters into the phosphate network, forming Fe-O-P bonds instead of P-O-P bonds.

Key words: Phosphate glass; Iron oxide; FTIR; Raman