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(a) Room temperature XRD data of Al2O3 (0006) and VO2 (020). (b) The effect of O2 flow rate on b-spacing. (c) The effect of b-spacing on the transition temperature.
(a) V L3,2 -edge and O K-edge XAS, TFY is more bulk sensitive, and TEY is more surface sensitive. (b) V 2p XPS.
(a) DC resistivity as a function of temperature. (b) V L 3-edge resonant photoemission. Dashed lines are high temperature (∼400 K) measurements (metallic), and solid lines are room temperature measurements (insulating).
Electrical transport properties of the 4 samples with different O2 flow rate.
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