27 September 2010 to 1 October 2010
CSIR Convention Centre
Africa/Johannesburg timezone

Thermodynamic stability of VO2 in contact with thin metal films

Not scheduled
CSIR Convention Centre

CSIR Convention Centre

CSIR, Pretoria
Poster Track A - Condensed Matter Physics and Material Science


Prof. Muzi Ndwandwe (University of Zululand)


Solid state compound phase formation has been investigated between thin metal films (Co, Hf, Ni, Pd and Pt) and VO2 substrates using RBS and XRD. The thin-film couples were annealed from 45 min to 1 hr between 400 and 900 degrees centigrade. It was found that Hf reacts with VO2 whereas Co, Ni, Pd and Pt do not. Heats of reaction were calculated for all possible combinations of the vanadium alloy and metal oxide reaction products. Comparison with experimental results show in all cases that reactions take place for negative heats of reaction. Results obtained correlete well with a Miedema parameter providing a way of predicting a reaction.

Primary author

Prof. Muzi Ndwandwe (University of Zululand)


Mrs Betty Kibirige (University of Zululand) Prof. Ouassini Nemraoui (University of Zululand) Mr Percy Sefage (University of Zululand) Mr Thembinkosi Nyawo (University of Zululand)

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