Magnetic, FMR and mössbauer studies of nanocrystalline greigite

0541668 - FZÚ 2022 RIV NL eng J - Journal Article
Pashchenko, Mariia - Veverka, Pavel - Kmjec, T. - Kaman, Ondřej - Kubíčková, Lenka - Kohout, J. - Klementová, Mariana - Kravchuk, O. - Vakula, A. - Tarapov, S. - Hejtmánek, Jiří - Knížek, Karel
Magnetic, FMR and mössbauer studies of nanocrystalline greigite.
Journal of Alloys and Compounds. Roč. 857, March (2021), č. článku 157569. ISSN 0925-8388. E-ISSN 1873-4669
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA19-06433S; GA MŠMT LM2018110
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : greigite * thiospinel * superparamagnetic and blocked state * ⁵⁷Fe Mossbauer spectroscopy * ferromagnetic resonance
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 6.371, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.jallcom.2020.157569

Iron sulphide Fe3S4, known as the mineral greigite, has been prepared in two distinct nanocrystalline forms with the mean crystallite size of dXRD≈ 30 and 80 nm via hydrothermal synthesis by using two different surfactants (oleic acid and cetyltrimethylammonium bromide). Their crystallinity and phase purity are probed by X-ray diffraction and Mössbauer spectroscopy. For detailed characterization of the ferrimagnetic state and its temperature evolution, the SQUID magnetometry, ferromagnetic resonance and the temperature dependence of 57Fe Mössbauer spectra are used. The blocking behaviour of the nanocrystalline samples is discussed with respect to magnetic and Mössbauer data.
Permanent Link: http://hdl.handle.net/11104/0319200