Scaling Parameters in Frustrated Systems: Spin Glasses and Relaxor Ferroelectrics

Through analysis of low-field AC susceptibility data in relaxor ferroelectric and magnetic spin glass solids, the key parameters of activation energy, E A , and freezing temperature, T f , were extracted from the Vögel–Fulcher dependence of the maxima. At higher temperatures the deviation temperature, T D , was obtained from departure of the high temperature Curie–Weiss behavior. Collectively, these parameters were found to scale across different compounds and solid solutions for both the magnetic spin glasses and relaxor ferroelectrics.