P. Kolandaivel et al., VIBRATIONAL STUDIES OF MAGNESIUM HYDROGEN PHOSPHATE HYDROGEN AND BARIUM HYDROGEN PHOSPHATE CRYSTALS, Crystal research and technology, 28(8), 1993, pp. 1139-1145
Magnesium hydrogen phosphate and Barium hydrogen phosphate crystals we
re grown in the presence of sodium meta silicate (sol-gel method). Ram
an and IR spectra were measured for the above crystals. Vibrational as
signments were made for both the crystals. The large shift of the stre
tching and bending modes of water from the free state values indicates
the different hydrogen bonds strenghts present in the magnesium hydro
gen phosphate crystals.