Crystalline symmetry controlled magnetic switching in epitaxial (111) La_{0.7}Sr_{0.3}MnO₃ thin films

I. Hallsteinsen; E. Folven; F. K. Olsen; R. V. Chopdekar; M. S. Rzchowski; C. B. Eom; J. K. Grepstad; T. Tybell

doi:10.1063/1.4907877

journal article·2015-06Open access

Crystalline symmetry controlled magnetic switching in epitaxial (111) La_0.7Sr_0.3MnO₃ thin films

I. Hallsteinsen, E. Folven, F. K. Olsen, R. V. Chopdekar, M. S. Rzchowski, C. B. Eom, J. K. Grepstad, T. Tybell

APL Materials· Volume 3· Issue 6

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Source abstract

Abstract

Mixed-valence manganite thin films are attractive for spintronic devices. Crystalline orientation is a promising route to tailor switching mechanisms, as magnetization reversal depends on the magnetic anisotropy. Here, magnetic properties of (111)-oriented La0.7Sr0.3MnO3 thin films are elucidated by correlating macroscopic and local properties. The coercive field is an order of magnitude lower than (001)-oriented La0.7Sr0.3MnO3. Locally, a 6-fold magnetic anisotropy is observed, while macroscopically, an isotropic response is prevailing. This local coupling between the symmetry of the (111)-facet and magnetization governs the domain reversal process, demonstrating that symmetry offers a route to control magnetic properties for spintronic devices.

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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Multiferroics and related materials · Advanced Condensed Matter Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electronics and Telecommunications, Norwegian University of Science and Technology, Trondheim 7491, Norway

Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, USA

Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA

Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA

Funding

National Science Foundation · Norwegian Research council

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