Magnetic domain configuration of (111)-oriented LaFeO3 epitaxial thin films

I. Hallsteinsen; M. Moreau; R. V. Chopdekar; E. Christiansen; M. Nord; P.-E. Vullum; J. K. Grepstad; R. Holmestad; S. M. Selbach; A. Scholl; E. Arenholz; E. Folven; T. Tybell

doi:10.1063/1.4986555

APL Materials (Aug 2017)

Magnetic domain configuration of (111)-oriented LaFeO3 epitaxial thin films

I. Hallsteinsen,
M. Moreau,
R. V. Chopdekar,
E. Christiansen,
M. Nord,
P.-E. Vullum,
J. K. Grepstad,
R. Holmestad,
S. M. Selbach,
A. Scholl,
E. Arenholz,
E. Folven,
T. Tybell

Affiliations

I. Hallsteinsen: Department of Electronic Systems, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
M. Moreau: Department of Electronic Systems, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
R. V. Chopdekar: Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, USA
E. Christiansen: Department of Physics, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
M. Nord: Department of Physics, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
P.-E. Vullum: SINTEF Materials and Chemistry, Trondheim 7491, Norway
J. K. Grepstad: Department of Electronic Systems, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
R. Holmestad: Department of Physics, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
S. M. Selbach: Department of Materials Science and Engineering, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
A. Scholl: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
E. Arenholz: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
E. Folven: Department of Electronic Systems, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway
T. Tybell: Department of Electronic Systems, NTNU–Norwegian University of Science and Technology, Trondheim 7491, Norway

DOI: https://doi.org/10.1063/1.4986555
Journal volume & issue: Vol. 5, no. 8
pp. 086107 – 086107-8

Abstract

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In antiferromagnetic spintronics control of the domains and corresponding spin axis orientation is crucial for devices. Here we investigate the antiferromagnetic axis in (111)-oriented LaFeO3/SrTiO3, which is coupled to structural twin domains. The structural domains have either the orthorhombic a- or b-axis along the in-plane ⟨11¯0⟩ cubic directions of the substrate, and the corresponding magnetic domains have the antiferromagnetic axis in the sample plane. Six degenerate antiferromagnetic axes are found corresponding to the ⟨11¯0⟩ and ⟨112¯⟩ in-plane directions. This is in contrast to the biaxial anisotropy in (001)-oriented films and reflects how crystal orientation can be used to control magnetic anisotropy in antiferromagnets.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

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