Berlin 2018 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 12: Multiferroics and magnetoelectrics II (joint session MA/KFM)

KFM 12.5: Vortrag

Mittwoch, 14. März 2018, 10:45–11:00, EB 202

Frustrated magnetism and magnetoelectric switching in RMn2O5 compounds — •Sergey Artyukhin and Louis Ponet — Italian Institute of Technology, Via Morego 30, Genova, Italy

Rare earth manganites RMn2O5 exibit complex magnetism and magnetically induced polarization, with chains of antiferromagnetically coupled Mn ions along a direction geometrically frustrated interchain interactions along b, and the competition of nearest and next-nearest neighbor exchanges along c leading to spiral states in YMn2O5. Here we use Landau theory and model Hamiltonian calculations with parameters obtained from density functional perturbation theory calculations to study magnetoelectric coupling and magnetic switching in these compounds.