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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1826

Title: Raman spectroscopy of WO3 nano-wires and thermo-chromism study of VO2 belts produced by ultrasonic spray and laser pyrolysis techniques
Authors: Mwakikunga, BW
Sideras-Haddad, E
Forbes, A
Arendse, C
Keywords: Nano-wires
Raman spectroscopy
Thermo-chromism study
Laser pyrolysis techniques
Issue Date: 2008
Publisher: WILEY-VCH
Citation: Mwakikunga, BW, Sideras-Haddad, E, Forbes, A and Arendse, C. 2008. Raman spectroscopy of WO3 nano-wires and thermo-chromism study of VO2 belts produced by ultrasonic spray and laser pyrolysis techniques. Physica Status Solidi (a) Applications and Materials Science, Vol. 205(1), pp 150-154
Abstract: Novel optical and electrical properties of newly synthesized nano-wires of monoclinic WO3 and nano-belts of rutile VO2 have been investigated by Raman spectroscopy and thermochromism studies respectively. Phonon confinement is observed in the WO3 nano-wires and the previously modified Richter equation is fitted to the experimental Raman spectroscopy data to obtain the optical phonon dispersion relations for the 713 cm–1 branch and the 808 cm–1 branch of WO3 phonon spectra for the first time. Electrical measurements on the VO2 nano-belts at varying temperature reveal an enhanced hysteresis width of about 83 °C surpassing previously reported values on the thermo-chromism studies on VO2.
Description: Copyright: 2008 WILEY-VCH Verlag GmbH & Co
URI: http://hdl.handle.net/10204/1826
ISSN: 0031-8965
Appears in Collections:National Centre for nano-structured materials
Laser physics and technology
Laser materials processing
General science, engineering & technology

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