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VO2(B) conversion to VO2(A) and VO2(M) and their oxidation resistance and optical switching properties Cover

VO2(B) conversion to VO2(A) and VO2(M) and their oxidation resistance and optical switching properties

Materials Science-Poland
Volume 34 (2016): Issue 1 (March 2016)
By:
Open Access
|Apr 2016

Figures & Tables

Fig. 1

XRD patterns of the as-obtained VO2(B) nanobelts.
XRD patterns of the as-obtained VO2(B) nanobelts.

Fig. 2

XRD patterns of the as-obtained VO2(A) transformed from VO2(B) nanobelts by hydrothermal treatment at 280 °C for 48 h.
XRD patterns of the as-obtained VO2(A) transformed from VO2(B) nanobelts by hydrothermal treatment at 280 °C for 48 h.

Fig. 3

XRD patterns of the as-obtained VO2(M) transformed from VO2(B) nanobelts by heating treatment at 700 °C for 2 h.
XRD patterns of the as-obtained VO2(M) transformed from VO2(B) nanobelts by heating treatment at 700 °C for 2 h.

Fig. 4

TEM images of the as-obtained nanobelts: (a) VO2(B), (b) VO2(A) and (c) VO2(M).
TEM images of the as-obtained nanobelts: (a) VO2(B), (b) VO2(A) and (c) VO2(M).

Fig. 5

TG curves of the as-obtained VO2(B), VO2(A) and VO2(M) nanobelts in air atmosphere.
TG curves of the as-obtained VO2(B), VO2(A) and VO2(M) nanobelts in air atmosphere.

Fig. 6

Heat flow curves of the as-obtained VO2(B), VO2(A) and VO2(M) nanobelts in air atmosphere.
Heat flow curves of the as-obtained VO2(B), VO2(A) and VO2(M) nanobelts in air atmosphere.

Fig. 7

DSC curves of the as-obtained VO2(A) and VO2(M) nanobelts.
DSC curves of the as-obtained VO2(A) and VO2(M) nanobelts.

Fig. 8

Variable-temperature infrared spectra of VO2(A) nanobelts below and above Tc.
Variable-temperature infrared spectra of VO2(A) nanobelts below and above Tc.

Fig. 9

Variable-temperature infrared spectra of VO2(M) nanobelts below and above Tc.
Variable-temperature infrared spectra of VO2(M) nanobelts below and above Tc.

The crystallography data of some important types of VO2 polymorph_

PhaseTc [°C]

Tc: phase transition temperature; Cs: Crystal system; Sg: Space group.

Cs

Tc: phase transition temperature; Cs: Crystal system; Sg: Space group.

Sg

Tc: phase transition temperature; Cs: Crystal system; Sg: Space group.

a [Å]b [Å]c [Å]β (°)Ref.
VO2(B)—MonoclinicC2/m12.033.6936.420106.6[17]
VO2(M)68MonoclinicP21/c5.7434.1575.375122.6[18]
VO2(R)68TetragonalP42/mnm4.5304.5302.869—[19]
VO2(AL)162TetragonalP4/ncc8.4408.4407.666—[20]
VO2(AH)162TetragonalI4/m8.4768.4763.824—[20]
DOI: https://doi.org/10.1515/msp-2016-0023 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 169 - 176
Submitted on: Oct 1, 2015
Accepted on: Dec 12, 2015
Published on: Apr 27, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 Yifu Zhang, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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