Magnetic Dynamics of Phase Separation Domains in GdMn2O5 and Gd0.8Ce0.2Mn2O5 Multiferroics

TL;DR

This paper investigates the magnetic properties and dynamics of phase separation domains in GdMn2O5 and Gd0.8Ce0.2Mn2O5, revealing their 1D superlattice structure and comparing them with other RMn2O5 compounds.

Contribution

It introduces a 1D superlattice model for the magnetic dynamics of phase separation domains in these multiferroics, expanding understanding of their magnetic behavior.

Findings

Identified ferromagnetic resonances in superlattice layers

Compared properties across different RMn2O5 compounds

Established similarity in magnetic properties regardless of R ion type

Abstract

Specific features of the magnetic properties and magnetic dynamics of isolated phase separation domains in GdMn2O5 and Gd0.8Ce0.2Mn2O5 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 GdMn2O5 and Gd0.8Ce0.2Mn2O5 are compared with the properties of the previously investigated RMn2O5 (R = Eu, Tb, Er, and Bi) series. The similarity of the properties for all the RMn2O5 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 RMn2O5 is built.