%0 Journal Article
%K Manganese oxide
%K Multiferroics
%K Ferromagnetism
%K Exchange bias
%K Ferromagnetic materials
%K Heterojunctions
%K Antiferromagnetic orderings
%K Interfaces (materials)
%K Critical thickness
%K Exchange bias couplings
%K Ferromagnets
%K Interfacial exchanges
%K Linear dichroism
%A M Huijben
%A P Yu
%A L.W Martin
%A H.J.A Molegraaf
%A Y.-H Chu
%A M.B Holcomb
%A N Balke
%A G Rijnders
%A Ramamoorthy Ramesh
%B Advanced Materials
%D 2013
%G eng
%P 4739-4745
%R 10.1002/adma.201300940
%T Ultrathin limit of exchange bias coupling at oxide multiferroic/ ferromagnetic interfaces
%V 25
%X Exchange bias coupling at the multiferroic- ferromagnetic interface in BiFeO3/La0.7Sr0.3MnO3 heterostructures exhibits a critical thickness for ultrathin BiFeO3 layers of 5 unit cells (2 nm). Linear dichroism measurements demonstrate the dependence on the BiFeO3 layer thickness with a strong reduction for ultrathin layers, indicating diminished antiferromagnetic ordering that prevents interfacial exchange bias coupling. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.