M. Hafid et al., LOW-FREQUENCY RAMAN-SCATTERING AND STRUCTURAL RANGE ORDER IN NA2O-PBO-BI2O3-P2O5 PHOSPHATE-GLASSES, Phase transitions, 62(4), 1997, pp. 223-231
Systematic studies of the low-frequency Raman scattering (LFRS) in Na2
O-PbO-Bi2O3-P2O5 phosphate glasses have been undertaken. In the contin
uum media approximation, these studies, permit one to find out the str
uctural correlation range R-c, and to determine the structural correla
tion function. The estimated correlation lengths from the LFRS support
s the concept that the scale for structural order in the studied glass
es is similar to 7 Angstrom.