Nanoscale mapping of the magnetic properties of (111)-Oriented La0.67Sr0.33MnO3

O'Shea, K., MacLaren, D. , McGrouther, D. , Schwarzbach, D., Jungbauer, M., Huhn, S., Moshnyaga, V. and Stamps, R. L. (2015) Nanoscale mapping of the magnetic properties of (111)-Oriented La0.67Sr0.33MnO3. Nano Letters, 15(9), pp. 5868-5874. (doi: 10.1021/acs.nanolett.5b01953) (PMID:26252745)

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Spatially-resolved analysis of magnetic properties on the nanoscale remains challenging, yet strain and defects on this length-scale can profoundly affect a material’s bulk performance. We present a detailed investigation of the magnetic properties of La0.67Sr0.33MnO3 thin films in both free-standing and nanowire form and assess the role of strain and local defects in modifying the films’ magnetic properties. Lorentz transmission electron microscopy is used to measure the magnetocrystalline anisotropy and to map the Curie temperature and saturation magnetisation with nanometre spatial resolution. Atomic-scale defects are identified as pinning sites for magnetic domain wall propagation. Measurement of domain wall widths and crystalline strain are used to identify a strong magnetoelastic contribution to the magnetic anisotropy. Together, these results provide unique insight into the relationship between the nanostructure and magnetic functionality of a ferromagnetic complex oxide film.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Stamps, Professor Robert and MacLaren, Dr Donald and McGrouther, Dr Damien and O'Shea, Miss Kerry
Authors: O'Shea, K., MacLaren, D., McGrouther, D., Schwarzbach, D., Jungbauer, M., Huhn, S., Moshnyaga, V., and Stamps, R. L.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nano Letters
Publisher:American Chemical Society
ISSN (Online):1530-6992
Copyright Holders:Copyright © 2015 American Chemical Society
First Published:First published in Nano Letters 15(9):5868-5874
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.203

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
530721Integrating advanced nanomaterials into transformative technologiesDonald MaclarenEngineering & Physical Sciences Research Council (EPSRC)EP/I00419X/1P&A - PHYSICS & ASTRONOMY