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Neel vector reorientation in ferromagnetic/antiferromagnetic complex oxide nanostructures

Bang, Ambjørn Dahle; Hallsteinsen, Ingrid; Olsen, Fredrik Kjemperud; Slöetjes, Samuel Dingeman; Retterer, Scott T; Scholl, Andreas; Arenholz, Elke; Folven, Erik; Grepstad, Jostein
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2639709
Date
2019
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  • Institutt for elektroniske systemer [1842]
  • Publikasjoner fra CRIStin - NTNU [26648]
Original version
10.1063/1.5094604
Abstract
In this study, we report on a temperature-driven antiferromagnetic (AF) spin reorientation transition in micro- and nanostructures of AF/ferromagnetic (FM) LaFeO3/La0.7Sr0.3MnO3 thin film bilayers. Using a combination of x-ray photoemission electron microscopy and x-ray absorption spectroscopy, the Néel vector is shown to reorient 90° as a result of the competition between a shape-imposed anisotropy in the AF layer and interface coupling to the adjacent FM layer. We demonstrate how a temperature dependence of the AF/FM spin configuration in line-shaped nanomagnets can be tuned by variation of their linewidth. This work provides insight into the AF/FM interface exchange coupling in complex oxide heterostructures and the possibilities of spin control by nanostructuring in thin film spintronics.
Publisher
AIP Publishing
Journal
Applied Physics Letters

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