Eur. Phys. J. B 54, 415-418 (2006)
https://doi.org/10.1140/epjb/e2007-00024-8

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

¹ Institute of Metal Physics Ural Division of RAS, 18 S. Kovalevskaya St, 620041 Ekaterinburg, Russia
² Institute of Solid State Chemistry Ural Division of RAS, 91 Pervomaiskaya St, 620219 Ekaterinburg, Russia

Corresponding authors: ^a rin@imp.uran.ru - ^b nossov@imp.uran.ru

Received: 21 April 2006
Revised: 15 November 2006
Published online: 3 February 2007

Abstract

Using the technique of penetration of electromagnetic waves through the bulk samples of La_0.60Er_0.07Ba_0.33MnO₃ 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.