Key points are not available for this paper at this time.
Low-temperature dispersion of the electric susceptibilities in a mixed crystal of Rb₁-ₗ (N{H₄) }ₗH₂PO₄ (x=0. 35) is reported. The frustrated proton ordering of this system relates it to spin-glasses. The measurements reveal a broad distribution of relaxation times. The data scale using a temperature-independent distribution of activation energies linked to the relaxation times by a Vogel-Fulcher law with a freezing temperature of 10 K.
E. Courtens (Mon,) studied this question.