Niobophosphate glasses [(xNb(2)O(5)(0.5 - x)P2O5)(0.5)Li2O]:yFe(2)O(3)
were prepared by the melt-quenching method and analysed by means of i
nfrared spectroscopy and X-ray powder diffraction. LiNbO3 crystals wer
e detected for high niobium contents samples. The use of both techniqu
es gives new information about the structure of niobium-phosphate glas
ses and glass-ceramics.