Penetration of electromagnetic field through the La-Er-Ba manganite far above the magnetic phase transition temperature

Using the technique of penetration of electromagnetic waves through the bulk samples of La<Subscript>0.60</Subscript>Er<Subscript>0.07</Subscript>Ba<Subscript>0.3 3</Subscript>MnO<Subscript>3</Subscript> manganite, it is shown that in this class of strongly correlated materials the local dynamic magnetic ordering is preserved at the temperature by 66 K above the Curie temperature where the static long-range magnetic order is absent. In this temperature range the dynamic magnetic permeability exceeds unity and is frequency dependent. The average lifetime of local ordered states is estimated. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006