Magnetic granulometry, Mössbauer spectroscopy, and theoretical modeling of magnetic states of Fe mO n–Fe m-xTi xO n composites

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Magnetic granulometry, Mössbauer spectroscopy, and theoretical modeling of magnetic states of Fe _mO _n–Fe _m-xTi _xO _n composites. / Сергиенко, Елена Сергеевна ; Костеров, Андрей Александрович; Янсон, Светлана Юрьевна; Харитонский, Петр Владимирович.

In: Chinese Journal of Physics, Vol. 78, 08.2022, p. 271-296.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{fe1624a6816a412cbd33f1865ef85b9f,

title = "Magnetic granulometry, M{\"o}ssbauer spectroscopy, and theoretical modeling of magnetic states of Fe mO n–Fe m-xTi xO n composites",

abstract = "Fe mO n–Fe m–xTi xO n composites, complex iron oxides doped with titanium, have been synthesized by coprecipitation (Cp series) or precipitation on preliminarily obtained magnetic particles (P series) followed by hydro- or solvothermal treatment. The results of magnetometry, scanning electron microscopy, X-ray diffraction, X-ray fluorescence, X-ray photoelectron and M{\"o}ssbauer spectroscopy reveal the presence of three main fractions: chemically inhomogeneous strongly magnetic particles (maghemite/magnetite-titanomagnetite), weakly magnetic particles (hematite, goethite and possibly other iron hydroxides) and superparamagnetic particles belonging to the first two fractions. Samples of the Cp series where magnetically stable particles dominate are clearly distinct from the P series, which is dominated by superparamagnetic particles. Theoretical estimations of the hysteresis characteristics based on the model of magnetostatically interacting two-phase particles are in the best agreement with the experimental data at characteristic particle sizes of 60 nm for the Cp series and 13 nm for the P series. ",

keywords = "Hydrothermal and solvothermal treatments, Magnetic granulometry, Magnetostatic interaction, M{\"o}ssbauer spectroscopy, Precipitation and coprecipitation, Two-phase particles",

author = "Сергиенко, {Елена Сергеевна} and Костеров, {Андрей Александрович} and Янсон, {Светлана Юрьевна} and Харитонский, {Петр Владимирович}",

note = "Publisher Copyright: {\textcopyright} 2022 The Physical Society of the Republic of China (Taiwan)",

year = "2022",

month = aug,

doi = "10.1016/j.cjph.2022.06.024",

language = "English",

volume = "78",

pages = "271--296",

journal = "Chinese Journal of Physics",

issn = "0577-9073",

publisher = "Physical Society of the Republic of China",

}

RIS

TY - JOUR

T1 - Magnetic granulometry, Mössbauer spectroscopy, and theoretical modeling of magnetic states of Fe mO n–Fe m-xTi xO n composites

AU - Сергиенко, Елена Сергеевна

AU - Костеров, Андрей Александрович

AU - Янсон, Светлана Юрьевна

AU - Харитонский, Петр Владимирович

PY - 2022/8

Y1 - 2022/8

N2 - Fe mO n–Fe m–xTi xO n composites, complex iron oxides doped with titanium, have been synthesized by coprecipitation (Cp series) or precipitation on preliminarily obtained magnetic particles (P series) followed by hydro- or solvothermal treatment. The results of magnetometry, scanning electron microscopy, X-ray diffraction, X-ray fluorescence, X-ray photoelectron and Mössbauer spectroscopy reveal the presence of three main fractions: chemically inhomogeneous strongly magnetic particles (maghemite/magnetite-titanomagnetite), weakly magnetic particles (hematite, goethite and possibly other iron hydroxides) and superparamagnetic particles belonging to the first two fractions. Samples of the Cp series where magnetically stable particles dominate are clearly distinct from the P series, which is dominated by superparamagnetic particles. Theoretical estimations of the hysteresis characteristics based on the model of magnetostatically interacting two-phase particles are in the best agreement with the experimental data at characteristic particle sizes of 60 nm for the Cp series and 13 nm for the P series.

AB - Fe mO n–Fe m–xTi xO n composites, complex iron oxides doped with titanium, have been synthesized by coprecipitation (Cp series) or precipitation on preliminarily obtained magnetic particles (P series) followed by hydro- or solvothermal treatment. The results of magnetometry, scanning electron microscopy, X-ray diffraction, X-ray fluorescence, X-ray photoelectron and Mössbauer spectroscopy reveal the presence of three main fractions: chemically inhomogeneous strongly magnetic particles (maghemite/magnetite-titanomagnetite), weakly magnetic particles (hematite, goethite and possibly other iron hydroxides) and superparamagnetic particles belonging to the first two fractions. Samples of the Cp series where magnetically stable particles dominate are clearly distinct from the P series, which is dominated by superparamagnetic particles. Theoretical estimations of the hysteresis characteristics based on the model of magnetostatically interacting two-phase particles are in the best agreement with the experimental data at characteristic particle sizes of 60 nm for the Cp series and 13 nm for the P series.

KW - Hydrothermal and solvothermal treatments

KW - Magnetic granulometry

KW - Magnetostatic interaction

KW - Mössbauer spectroscopy

KW - Precipitation and coprecipitation

KW - Two-phase particles

UR - http://www.scopus.com/inward/record.url?scp=85133941026&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/e7b82a85-968c-3732-bfcf-e70829f524f8/

U2 - 10.1016/j.cjph.2022.06.024

DO - 10.1016/j.cjph.2022.06.024

M3 - Article

VL - 78

SP - 271

EP - 296

JO - Chinese Journal of Physics

JF - Chinese Journal of Physics

SN - 0577-9073

ER -

ID: 97068359