Proton conductivity in the layer compound H3OUO2AsO4x3H2O (HUAs). Pt. 2

The proton conductivity in tetragonal H3OUO2AsO4x(3-delta)H2O has been measured above the transition temperature at 299 K. The conductivity, calorimetric and spectroscopic data depend on the water content and the transition is suggested to be a peritectic reaction setting free a small amount of solution, which stays strongly adsorbed between the layers of the structure and gives rise to the high conductivity. (orig.)