Magnetic dynamics of phase separation domains in GdMn2O5 and Gd0.8Ce0.2Mn2O5 multiferroics

Specific features of the magnetic properties and magnetic dynamics of isolated phase separation domains in GdMn 2 O 5 and Gd 0.8 Ce 0.2 Mn 2 O 5 have been investigated. These domains represent 1D superlattices consisting of dielectric and conducting layers with the ferromagnetic orientation of their spins. A set of ferromagnetic resonances of separate superlattice layers has been studied. The properties of the 1D superlattices in GdMn 2 O 5 and Gd 0.8 Ce 0.2 Mn 2 O 5 are compared with the properties of the previously investigated RMn 2 O 5 (R = Eu, Tb, Er, and Bi) series. The similarity of the properties for all the RMn 2 O 5 compounds with different R ion types is established. Based on the concepts of the magnetic dynamics of ferromagnetic multilayers and properties of semiconductor superlattices, a 1D model of the superlattices in RMn 2 O 5 is built.