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Optical, Magnetic, and Electronic Properties of Nanostructured VO2 Thin Films Grown by Spray Pyrolysis: DFT First Principle Study.
- Source :
- Journal of Superconductivity & Novel Magnetism; Feb2020, Vol. 33 Issue 2, p511-517, 7p
- Publication Year :
- 2020
-
Abstract
- In this work, we have grown nanostructured vanadium dioxide (VO<subscript>2</subscript>) thin films by a spray pyrolysis coating method on glass pre-heated substrates at 450 °C and studied their optical and electronic properties. As-prepared film structure and morphology, with a thickness of ~ 400 nm, were examined by X-ray diffraction, Raman spectra, and atomic force microscopy (AFM), thus revealing a polycrystalline monoclinic M<subscript>1</subscript> phase. On the other hand, the electrical resistance was measured as a function of the temperature in the range of 25 to 100 °C where a clear transition from the M<subscript>1</subscript> phase at T = 25 °C to the metallic one (conductive phase) at ~ 60 °C was observed. This also confirms the stability of the M<subscript>1</subscript> phase for T < 60 °C. The electronic properties and band structure were additionally investigated by the local density approximation (LDA) using the first principle of the Korringa-Kohn-Rostroker (KKR). As a result, our material showed a magnetic property, specifically an antiferromagnetic stabilization of the M<subscript>1</subscript> phase. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 33
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 141511842
- Full Text :
- https://doi.org/10.1007/s10948-019-05216-3