Why frequency dispersion is occurring at high frequency and below ferro-para transition temperature?

12 February 2016 0 4K Report

Above loss peak, dielectric relaxation is characterized by Jonscher power law. In our sample a low-frequency dispersion is observed (slope < -1) in e' and e" both, however not understood why at temperature above ferro-para transition temperature (Tm) still frequency dispersion is observed.

Please, consider the graphs.

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