There, it is clear that both the VO 2 and the V 3 O 7 peaks evolve together, reaching their maximum value when the original stoichiometry is below 1.5, with a decreasing trend up to a stoichiometry of 1.9, when both peaks disappear.
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Oxidation of Amorphous Porous VO<sub>x</sub> at Low Temperatures for the Formation of Thermochromic VO<sub>2</sub> Films.
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