Scattering loss and viscosity against temperature measurements have been carried out on fluoride glasses. The results indicate for the first time a λ-4 behaviour for scattering loss in the 0.45–0.75 μm wavelength range. Activation energies for viscous flow were found to be similar for both ZrF4− and HfF4−based glasses.
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Poignant et al. (1982) studied this question.
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