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  Variation of magnetic properties of Sr2FeMoO6 due to oxygen vacancies

Hoffmann, M., Antonov, V. N., Bekenov, L. V., Kokko, K., Hergert, W., & Ernst, A. (2018). Variation of magnetic properties of Sr2FeMoO6 due to oxygen vacancies. Journal of Physics: Condensed Matter, 30(30): 305801. doi:10.1088/1361-648X/aacb8d.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-2EB0-D Version Permalink: https://hdl.handle.net/21.11116/0000-000F-CBC6-D
Genre: Journal Article

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Hoffmann_2018_J._Phys. _Condens._Matter_30_305801.pdf (Publisher version), 2MB
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2018
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https://doi.org/10.1088/1361-648X/aacb8d (Publisher version)
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 Creators:
Hoffmann, Martin1, Author
Antonov, Victor N1, Author
Bekenov, Lev V.2, Author
Kokko, Kalevi1, Author
Hergert, Wolfram1, Author
Ernst, Arthur2, Author           
Affiliations:
1External Organizations, ou_persistent22              
2Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              

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 Abstract: Oxygen vacancies can be of utmost importance for improving or deteriorating physical properties of oxide materials. Here, we studied from first-principles the electronic and magnetic properties of oxygen vacancies in the double perovskite Sr2FeMoO6 (SFMO). We show that oxygen vacancies can increase the Curie temperature in SFMO, although the total magnetic moment is reduced at the same time. We found also that the experimentally observed valence change of the Fe ions from 3+  to 2+  in the x-ray magnetic circular dichroism (XMCD) measurements is better explained by oxygen vacancies than by the assumed mixed valence state. The agreement of the calculated x-ray absorption spectra and XMCD results with experimental data is considerably improved by inclusion of oxygen vacancies.

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 Dates: 2018-07-032018-08-01
 Publication Status: Issued
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 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: P13417
DOI: 10.1088/1361-648X/aacb8d
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Title: Journal of Physics: Condensed Matter
  Abbreviation : J. Phys. Condens. Matter.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 30 (30) Sequence Number: 305801 Start / End Page: - Identifier: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478