Abstract
Physical techniques have been applied to derive information on isotopic exchange in mixed-valence Tl4Cl6. Using the positron as a probe, it has been found that cation-vacancy formation is relatively easy, with an activation energy of 0.35 eV. Conductivity measurements have shown that Tl4Cl6 is a good ionic conductor in the temperature range where exchange proceeds (470–550 K) with an activation energy for conduction of 0.69 eV. Comparing these energies with the activation energy derived in a previous chemical study shows that the exchange process is triggered by the presence of anion vacancies.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
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