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  Magnetic domain wall pinning in cobalt ferrite microstructures

Ruiz Gómez, S., Mandziak, A., Martín-García, L., Prieto, J. E., Prieto, P., Munuera, C., et al. (2022). Magnetic domain wall pinning in cobalt ferrite microstructures. Applied Surface Science, 600: 154045, pp. 1-6. doi:10.1016/j.apsusc.2022.154045.

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 Creators:
Ruiz Gómez, Sandra1, Author           
Mandziak, Anna2, Author
Martín-García, Laura2, Author
Prieto, José Emilio2, Author
Prieto, Pilar2, Author
Munuera, Carmen2, Author
Foerster, Michael2, Author
Quesada, Adrián2, Author
Aballe, Lucía2, Author
de la Figuera, Juan2, Author
Affiliations:
1Spin3D: Three-Dimensional Magnetic Systems, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_3385536              
2External Organizations, ou_persistent22              

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Free keywords: Cobalt ferrites, Correlative microscopy, Domain wall pinning
 Abstract: A detailed correlative structural, magnetic and chemical analysis of (non-stoichiometric) cobalt ferrite micrometric crystals was performed by x-ray magnetic circular dichroism combined with photoemission microscopy, low-energy electron microscopy and atomic force microscopy. The magnetization vector inside the islands was resolved at the nanoscale, as obtained from magnetic images taken at different x-ray incidence angles. The location of the magnetic domain walls was correlated with the presence of different types of defects as revealed by the different microscopies. This, together with the results of micromagnetic simulations, suggests that the main source of pinning in these microcrystals are linear structural defects induced in the spinel structure by the substrate steps underneath the islands. Our result is of relevance for understanding the different magnetic properties of thin films and nanostructures as compared with the corresponding bulk materials. © 2022 The Authors

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Language(s): eng - English
 Dates: 2022-06-242022-06-24
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.apsusc.2022.154045
 Degree: -

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Title: Applied Surface Science
  Abbreviation : Appl. Surf. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 600 Sequence Number: 154045 Start / End Page: 1 - 6 Identifier: ISSN: 0169-4332
CoNE: https://pure.mpg.de/cone/journals/resource/954928576736