STUDY OF MAGNETIC PHASE TRANSITIONS IN La0.75Sm0.25Mn2Si2 COMPOUND USING 57Fe PROBE MO¨ SSBAUER SPECTROSCOPY
- Authors: Naumov S.P.1, Bartashevich A.M.1, Gerasimov E.G.1, Mushnikov N.V.1, Terentev P.B.1, Gaviko V.S.1
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
- Issue: Vol 126, No 9 (2025)
- Pages: 971-980
- Section: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
- URL: https://journal-vniispk.ru/0015-3230/article/view/309016
- DOI: https://doi.org/10.7868/S3034621525090025
- ID: 309016
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Abstract
The compound La0.75Sm0.25Mn2Si2 has been studied by the 57Fe probe M¨ossbauer spectroscopy with the aim to determine magnetic and electronic states of Mn atoms and their changes upon magnetic phase transitions. M¨ossbauer spectra of the model compound La0.75Sm0.25(Mn0.99Fe0.01)2Si2 doped with 57Fe isotope were measured at different temperatures, their fitting and analysis of the obtained hyperfine parameters of different subspectra have been performed. It is shown that the degree of oxygenation of Mn and magnitude of its magnetic moment remain unchanged in the course of the first-order antiferromagnetferromagnet transition. The chemical Mn–Si bonds in the compound are stated to be covalent. The angels of deviation of Mn magnetic moments from the с-axis and their changes with temperature are determined.
About the authors
Sergey P. Naumov
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Author for correspondence.
Email: naumov_sp@imp.uran.ru
ORCID iD: 0000-0003-4354-254X
Russian Federation, Ekaterinburg, 620108
Alexandr M. Bartashevich
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: bartashevich@imp.uran.ru
ORCID iD: 0000-0003-1406-5537
Russian Federation, Ekaterinburg, 620108
Evgeniy G. Gerasimov
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: gerasimov@imp.uran.ru
ORCID iD: 0000-0002-1975-705X
Russian Federation, Ekaterinburg, 620108
Nikolay V. Mushnikov
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: mushnikov@imp.uran.ru
ORCID iD: 0000-0002-6354-2558
Russian Federation, Ekaterinburg, 620108
Pavel B. Terentev
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: terentev@imp.uran.ru
ORCID iD: 0000-0002-2348-6459
Russian Federation, Ekaterinburg, 620108
Vasiliy S. Gaviko
Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: gaviko@imp.uran.ru
ORCID iD: 0000-0002-9841-9293
Russian Federation, Ekaterinburg, 620108
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