8-12 July 2013
Africa/Johannesburg timezone
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Structural studies of Y and Zr doped nano-crystalline tin oxide using EXAFS and Raman Scattering techniques.

9 Jul 2013, 17:40
Poster Presentation Track A - Division for Condensed Matter Physics and Materials Poster1


Prof. Erasmus Koena Rammutla (University of Limpopo)

Abstract content <br> &nbsp; (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.

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Primary author

Prof. Erasmus Koena Rammutla (University of Limpopo)


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)

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