Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties
Ferrites of cobalt CoFe2O4 and cobalt-zinc Co0.65Zn0.35Fe2O4 were obtained by co-precipitation of aqueous salt solutions followed by thermal and mechanical treatment of precipitates, and studied by X-ray phase analysis, scanning electron microscopy, FTIR spectroscopy and magnetometry. The materials...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Next Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822825001704 |
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| author | Yu.S. Haiduk E.G. Petrova J.A. Fedotova N.M. Lapchuk A.A. Kharchanka E.V. Korobko A.E. Usenka V.V. Pankov |
| author_facet | Yu.S. Haiduk E.G. Petrova J.A. Fedotova N.M. Lapchuk A.A. Kharchanka E.V. Korobko A.E. Usenka V.V. Pankov |
| author_sort | Yu.S. Haiduk |
| collection | DOAJ |
| description | Ferrites of cobalt CoFe2O4 and cobalt-zinc Co0.65Zn0.35Fe2O4 were obtained by co-precipitation of aqueous salt solutions followed by thermal and mechanical treatment of precipitates, and studied by X-ray phase analysis, scanning electron microscopy, FTIR spectroscopy and magnetometry. The materials are polydisperse powders with a size of coherent scattering regions of 30–35 nm, and high shear stress in magnetorheological suspensions, which is 4.5 times higher than the corresponding value for nanosized particles. High-temperature annealing leads to a significant increase in the specific magnetization of powders, as well as the shear stress in suspensions prepared on their basis. Doping cobalt ferrite with zinc leads to an increase in the specific magnetization and shear stress of magnetorheological suspensions based on it. The shear stress in suspensions of investigated materials is ∼2.5–4.5 kPa at 625 mT, which allows them to be used as functional fillers for magnetorheological applications. |
| format | Article |
| id | doaj-art-5ddf8035b1e841bfaa29ea7dd5638373 |
| institution | DOAJ |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Materials |
| spelling | doaj-art-5ddf8035b1e841bfaa29ea7dd56383732025-08-20T03:09:00ZengElsevierNext Materials2949-82282025-07-01810065210.1016/j.nxmate.2025.100652Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and propertiesYu.S. Haiduk0E.G. Petrova1J.A. Fedotova2N.M. Lapchuk3A.A. Kharchanka4E.V. Korobko5A.E. Usenka6V.V. Pankov7Belarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusInstitute of Chemistry of New Materials of the National Academy of Sciences of Belarus, F. Skaryna str. 36, Minsk 220141, Belarus; Corresponding author.Belarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusBelarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusBelarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusA.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, P. Brovki str. 15, Minsk 220072, BelarusBelarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusBelarusian State University, Nezalezhnastsi av. 4, Minsk 220030, BelarusFerrites of cobalt CoFe2O4 and cobalt-zinc Co0.65Zn0.35Fe2O4 were obtained by co-precipitation of aqueous salt solutions followed by thermal and mechanical treatment of precipitates, and studied by X-ray phase analysis, scanning electron microscopy, FTIR spectroscopy and magnetometry. The materials are polydisperse powders with a size of coherent scattering regions of 30–35 nm, and high shear stress in magnetorheological suspensions, which is 4.5 times higher than the corresponding value for nanosized particles. High-temperature annealing leads to a significant increase in the specific magnetization of powders, as well as the shear stress in suspensions prepared on their basis. Doping cobalt ferrite with zinc leads to an increase in the specific magnetization and shear stress of magnetorheological suspensions based on it. The shear stress in suspensions of investigated materials is ∼2.5–4.5 kPa at 625 mT, which allows them to be used as functional fillers for magnetorheological applications.http://www.sciencedirect.com/science/article/pii/S2949822825001704Cobalt ferriteCobalt-zinc ferriteMagnetorheological materials |
| spellingShingle | Yu.S. Haiduk E.G. Petrova J.A. Fedotova N.M. Lapchuk A.A. Kharchanka E.V. Korobko A.E. Usenka V.V. Pankov Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties Next Materials Cobalt ferrite Cobalt-zinc ferrite Magnetorheological materials |
| title | Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties |
| title_full | Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties |
| title_fullStr | Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties |
| title_full_unstemmed | Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties |
| title_short | Ferrites of cobalt and cobalt-zinc for magnetorheological materials: Preparation and properties |
| title_sort | ferrites of cobalt and cobalt zinc for magnetorheological materials preparation and properties |
| topic | Cobalt ferrite Cobalt-zinc ferrite Magnetorheological materials |
| url | http://www.sciencedirect.com/science/article/pii/S2949822825001704 |
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