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Title
Variation of magnetic properties of Sr2FeMoO6 due to oxygen vacancies
AuthorHoffmann, Martin ; Antonov, Victor N. ; Bekenov, Lev V. ; Kokko, Kalevi ; Hergert, Wolfram ; Ernst, Arthur
Published in
Journal of Physics: Condensed Matter, 2018, Vol. 30, Issue 30
PublishedIOP Publishing, 2018
LanguageEnglish
Document typeJournal Article
Project-/Reportnumber57071667
URNurn:nbn:at:at-ubl:3-946 Persistent Identifier (URN)
DOI10.1088/1361-648X/aacb8d 
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 The work is publicly available
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Variation of magnetic properties of Sr2FeMoO6 due to oxygen vacancies [1.45 mb]
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Abstract (English)

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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CC-BY-License (4.0)Creative Commons Attribution 4.0 International License