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An X-ray diffraction study of semiconductor and metallic vanadium dioxide

Published online by Cambridge University Press:  10 January 2013

K. D. Rogers
K. D. Rogers
Affiliation:
Cranfield Institute of Technology (RMCS), Shrivenham, Swindon, Wiltshire SN6 8LA, United Kingdom
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Abstract

Powder diffraction data for semiconductor and metallic states of vanadium dioxide are presented. The structures are refined by Rietveld methods using a monoclinic cell (a = 5.7529Å, b = 4.5263Å, c = 5.3825Å, β = 122.61°) and space group P21/c for the room temperature data, and a tetragonal cell (a =4.5540Å, c = 2.8557Å) and space group P42/mnm for data collected at 400 K. The similarity between the corresponding X-ray diffraction patterns is discussed. The transition process from the monoclinic to tetragonal phase is investigated and initial evidence for the coexistence of phases over a small temperature range is presented.

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Type
Research Article
Information
Powder Diffraction , Volume 8 , Issue 4 , December 1993 , pp. 240 - 244
Copyright
Copyright © Cambridge University Press 1993

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