Depolarized light-scattering experiments on molten ZnCl₂ have been performed in the frequency range 1--4000 GHz between 300 and 650 ^∘{}C. The {α} relaxation was observed up to 650 ^∘{}C. Comparison with mode coupling theory was attempted but gave inconclusive results due to the strong boson peak. The crossover temperature Tc was found to be in the range 270--310 ^∘{}C. The thermal evolution of the boson peak in the liquid phase was followed up to 650 ^∘{}C.
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Lebon et al. (1995) studied this question.
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