Structure and Properties of Cobalt Ferrite Synthesized by Coprecipitation

Structure and Properties of Cobalt Ferrite Synthesized by Coprecipitation Full article

Journal

Journal of Structural Chemistry
ISSN: 1573-8779 , E-ISSN: 0022-4766

Output data

Year: 2025, Volume: 66, Number: 11, Pages: 2424-2437 Pages count : 14 DOI: 10.1134/s0022476625110174

Authors

Bogdan T.V. ^1,2 , Mashchenko N.V. ² , Pankratov D.A. ^1,3 , Chernavskii P.A. ^1,2 , Abarina V.A. ^1,2 , Koklin A.E. ² , Lukyanov P.S. ^1,2 , Mishanin I.I. ^1,2 , Bogdan V.I. ^1,2

Affiliations

1	Faculty of Chemistry, Moscow State University, Moscow, Russia
2	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
3	Moscow Institute of Physics and Technology, Dolgoprudny, Russia

Samples of cobalt ferrite CoFe2O4 are synthesized by coprecipitation: 1) from iron(III) and cobalt(II) nitrates followed by calcination of the obtained precipitate at 500 °C and 1000 °C; 2) from iron(III) nitrate and cobalt(II) chloride followed by calcination of the obtained precipitate at 500 °C. They are characterized by powder X-ray diffraction, scanning electron microscopy, X-ray energy dispersive and Mössbauer spectroscopy, and in situ magnetometry. Before calcination the samples exhibit superparamagnetism; and the phase formation is not completed. The calcination stage is needed to reach the crystalline state. The crystalline sample with unit cell parameter a = 8.386 Å forms after calcination at 1000 °C. Magnetometric measurements show the formation of a phase with the Curie temperature close to 500 °C. According to the Mössbauer spectroscopic data, the cation distribution in the sample can be described as Fe0.53Co0.47 [Fe1.47Co0.53]O4. At –196 °C and 23 °C the calculated sizes of magnetic domains are 3.0 nm and 2.5 nm respectively.

Bogdan T.V. , Mashchenko N.V. , Pankratov D.A. , Chernavskii P.A. , Abarina V.A. , Koklin A.E. , Lukyanov P.S. , Mishanin I.I. , Bogdan V.I.
Structure and Properties of Cobalt Ferrite Synthesized by Coprecipitation
Journal of Structural Chemistry. 2025. V.66. N11. P.2424-2437. DOI: 10.1134/s0022476625110174 WOS Scopus OpenAlex

Web of science:	WOS:001632315900010
Scopus:	2-s2.0-105024096254
OpenAlex:	W4417041855

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