Evidence for Percolation of Random Distortion in a Dipolar Glass

A careful study of the polarization dynamics near the dipolar glass transition, utilizing both neutron and light scattering reveals a dichotomy in the behavior, on the one hand suggesting ordered domains of macroscopic extent and on the other clearly indicating dynamic cluster behavior in the same temperature region. An examination of this evidence leads us to suggest a percolated cluster model for the dipolar glass phase in KTN.