Concentration Dependence of the α‐ and β‐Processes for Alcohol‐Water Mixtures

We performed broadband dielectric measurements for triethylenelgycol‐water mixtures with various water contents in the frequency range between 1 μHz and 30 GHz in the temperature range between 130 K and 300 K. For the lower temperature range, the α‐ and β‐processes were observed for each mixture. The β‐process depends on the water content. The β‐process for lower water content relates to the local motion of solute molecules and for higher water content mixtures relates to the motion of the water molecules.