Abstract
The quenching of the equimolar PbOV 2O 5 melt gave rise to an amorphous material or two polycrystalline phases mixed with an amorphous matrix, depending on the cooling rate. These materials were submitted to heat treatment and all generated pure lead metavanadate crystals. All phases were characterized by means of powder X-ray diffraction, differential thermal analysis, scanning electron microscopy, and infrared absorption spectroscopy. Furthermore, the interdependence of all the amorphous and crystalline phases is explained. It was also possible to evaluate the kinetic parameters (activation energy and reaction order) of the glass → α-LPV phase transformation. It was confirmed that this reaction follows the Avrami-Erofe'ev equation.
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