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

Identification of Threshold Temperature For The Generation of Defects Associated with Superionic Region in BaF2 Using Positron Annihilation Technique

Not scheduled
CSIR Convention Centre

CSIR Convention Centre

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


Mr Thulani Jili (University of Zululand)


There is an uncertainty surrounding the generation of defects associated with superionic conductivity in terms of whether these are created at an observed transitional temperature Tc, or at an earlier temperature point. The measured conductivity becomes more pronounced at a temperature coinciding with the deviation of constant lattice parameter from 6.2096 angstrom. The Frenkel pairs responsible for superionic region are generated well below the actual transitional temperature and this is informed by the calculation of S-parameter and positron lifetime.

Primary author

Mr Thulani Jili (University of Zululand)


Mrs Betty Kibirige (University of Zululand) Prof. Elias Sideras-Haddad (University of the Witwatersrand) Mr Thembinkosi Nyawo (University of Zululand)

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