Publication Type:
Journal ArticleSource:
Advanced Materials, Volume 25, Number 34, p.4739-4745 (2013)Keywords:
Antiferromagnetic orderings, Critical thickness, exchange bias, Exchange bias couplings, Ferromagnetic materials, Ferromagnetism, Ferromagnets, Heterojunctions, Interfaces (materials), Interfacial exchanges, Linear dichroism, Manganese oxide, MultiferroicsAbstract:
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.
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