Spin structure in an interfacially coupled epitaxial ferromagnetic oxide heterostructure

X. Ke, L. J. Belenky, V. Lauter, H. Ambaye, C. W. Bark, C. B. Eom, M. S. Rzchowski

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40 Scopus citations

Abstract

We report the spin structure of an exchange-biased ferromagnetic oxide heterostructure, La0.67Sr0.33MnO3/SrRuO 3, through magnetization and polarized neutron reflectometry measurements. We reveal that the magnetization reversal process of the La 0.67Sr0.33MnO3 biased layer critically depends on the frozen-in spin structure of the SrRuO3 biasing layer during the cooling process. Furthermore, we observe unexpected double-shifted hysteresis loops of the biased layer that originates from the formation of lateral 180 magnetic domains within the biasing layer, a new mechanism not found in conventional exchange-bias systems.

Original languageEnglish
Article number237201
JournalPhysical Review Letters
Volume110
Issue number23
DOIs
StatePublished - Jun 4 2013

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