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

M. ELISA1, B. A. SAVA2,* , R. IORDANESCU1, I. FERARU1, C. VASILIU1, M. CALIN1, A. DIACONU2, L. D. URSU2, L. BOROICA2, Z. PLAIASU2, F. NASTASE3, C. NASTASE3, A. DUMITRU3

Affiliation

  1. National Institute of Optoelectronics-INOE 2000, Department of Optospintronics, RO-77125, Magurele, Romania
  2. National Institute of Glass, Department of Optical Glass, 032258, Bucharest, Romania
  3. University of Bucharest, Faculty of Physics, Department of Polymers, Bucharest, Romania

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 P2O5 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.

Keywords

Phosphate glass, Iron oxide, FTIR, Raman.

Citation

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, Optoelectronics and Advanced Materials - Rapid Communications, 4, 9, September 2010, pp.1301-1303 (2010).

Submitted at: Aug. 4, 2010

Accepted at: Sept. 15, 2010