Speaker
Prof.
Erasmus Koena Rammutla
(University of Limpopo)
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Abstract content <br> (Max 300 words)
Nanocrystals of Y and Zr doped SnO2 have been prepared by sol-gel route and annealed at 200, 400, 600, 800 and 1000 0C. The X-ray diffraction (XRD) results showed the average size of the particles in the freshly prepared samples to be ~ 3 nm. The Extended Absorption Fine Structure (EXAFS) technique was used to study the dopant environments in nanocrystalline tin oxide. In all Y-doped samples, except the one annealed at 1000 0C, there is clear evidence that Y has not entered the SnO2 lattice. This is clearly supported by the Raman scattering results. In all Zr-doped samples, there is a simple substitution for Sn by Zr.
Primary author
Prof.
Erasmus Koena Rammutla
(University of Limpopo)
Co-authors
Prof.
AV Chadwick
(University of Kent, School of Physical Sciences, Canterbury, UK)
Dr
RM Erasmus
(University of the Witwatersrand, School of Physics, Johannesburg, 2050, RSA)
