engleski

Structural properties of lead vanadate glasses containing La3+ or Fe3+ ions

Structural properties of lead vanadate glasses containing La3+ or Fe3+ ions were investigated using X-ray diffraction, Fourier transform infrared spectroscopy and laser Raman spectroscopy. Crystalline Pb2V2O7 was formed for the molar composition 66.7PbO-33.3V2O5. Incorporation of greater quantities of La3+ into lead metavanadate glass caused the crystallization of Pb2V2O7. Fourier transform infrared and laser Raman spectra also suggested the presence of LaVO4. Incorporation of Fe3+ ions into lead metavanadate glass, up to 20 wt % Fe2O3, did not cause crystallization inside the glass matrix. Changes in the vibrational spectra are discussed.

lead vanadate glasses ; X-ray diffraction ; infrared ; Raman

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