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Impact of Ni substitution on the structural and magnetic characteristics of SrFe12-xNixO19 (x= 0 – 0.3).

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Title: Impact of Ni substitution on the structural and magnetic characteristics of SrFe12-xNixO19 (x= 0 – 0.3).
Authors: Abiyev, A.S.1,2 (AUTHOR) afsunabiyev@gmail.com, Hasanov, K.M.1,3,4,5 (AUTHOR), Kostishin, V.G.6 (AUTHOR), Trukhanov, S.V.6,7 (AUTHOR), Čebela, M.8 (AUTHOR), Sumnikov, S.V.1 (AUTHOR), Hrekau, I.A.7 (AUTHOR), Trukhanov, A.V.6,7 (AUTHOR), Turchenko, V.A.1,6 (AUTHOR)
Source: Ceramics International. Jun2026:Part B, Vol. 52 Issue 14, p25642-25651. 10p.
Subjects: Strontium ferrite, Magnetic properties, Neutron diffraction, Rietveld refinement, Magnetic hysteresis, Crystal structure
Abstract: In this study, the structural and magnetic properties of Ni-substituted M-type hexaferrites with the composition SrFe 12-x Ni x O 19 (x = 0.0–0.3) were investigated by neutron diffraction, scanning electron microscopy (SEM), and magnetic measurements. Rietveld refinement of the diffraction data revealed that Ni ions substitute Fe3+ ions at the 12k Wyckoff sites, leading to a monotonic decrease in unit cell parameters and volume, while the hexagonal structure (space group P 6 3 / mmc) is preserved. SEM analysis showed a reduction in average crystallite size with increasing Ni concentration. Magnetic hysteresis measurements and Curie temperature analysis indicated a gradual decline in saturation magnetization and thermal stability due to weakening of Fe–O–Fe exchange interactions. These results demonstrate the structural sensitivity and magnetic response of SrFe 12 O 19 to partial Ni substitution. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:In this study, the structural and magnetic properties of Ni-substituted M-type hexaferrites with the composition SrFe 12-x Ni x O 19 (x = 0.0–0.3) were investigated by neutron diffraction, scanning electron microscopy (SEM), and magnetic measurements. Rietveld refinement of the diffraction data revealed that Ni ions substitute Fe3+ ions at the 12k Wyckoff sites, leading to a monotonic decrease in unit cell parameters and volume, while the hexagonal structure (space group P 6 3 / mmc) is preserved. SEM analysis showed a reduction in average crystallite size with increasing Ni concentration. Magnetic hysteresis measurements and Curie temperature analysis indicated a gradual decline in saturation magnetization and thermal stability due to weakening of Fe–O–Fe exchange interactions. These results demonstrate the structural sensitivity and magnetic response of SrFe 12 O 19 to partial Ni substitution. [ABSTRACT FROM AUTHOR]
ISSN:02728842
DOI:10.1016/j.ceramint.2026.04.106