Synthesis and Magnetic Properties of Sn-Doped CoFe2O4 Nanoferrites

N. Ngema; J. Z. Msomi; T. Moyo; A. M. Strydom; D. Britz

doi:10.1007/s10948-016-3786-6

Synthesis and Magnetic Properties of Sn-Doped CoFe₂O₄ Nanoferrites

N. Ngema, J. Z. Msomi, T. Moyo, A. M. Strydom, D. Britz

Physics

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

4 Citations (Scopus)

Abstract

CoSn_xFe_2−xO₄ (x = 0, 0.1, 0.5, and 1.0) nanoparticles have been synthesized and characterized by XRD, FTIR, TEM, SEM, Mössbauer spectroscopy, and SQUID measurements. XRD data confirm single-phase cubic spinel structure formation and particle size between 10 and 23 nm. The Mössbauer spectra recorded at about 300 K is indicative of ordered magnetic spin phase. Magnetization and Mössbauer data show the superparamagnetic nature of the compound CoSn_xFe_2−xO₄ (x = 0.5). The evolution of the properties as a function of x is discussed on the basis of particle size and Sn concentration. A strong correlation between coercive fields and crystallite sizes measured at room temperature is observed.

Original language	English
Pages (from-to)	2017-2022
Number of pages	6
Journal	Journal of Superconductivity and Novel Magnetism
Volume	30
Issue number	7
DOIs	https://doi.org/10.1007/s10948-016-3786-6
Publication status	Published - 1 Jul 2017

Keywords

Mössbauer spectroscopy
Spinel ferrites
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1007/s10948-016-3786-6

Cite this

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title = "Synthesis and Magnetic Properties of Sn-Doped CoFe2O4 Nanoferrites",

abstract = "CoSnxFe2−xO4 (x = 0, 0.1, 0.5, and 1.0) nanoparticles have been synthesized and characterized by XRD, FTIR, TEM, SEM, M{\"o}ssbauer spectroscopy, and SQUID measurements. XRD data confirm single-phase cubic spinel structure formation and particle size between 10 and 23 nm. The M{\"o}ssbauer spectra recorded at about 300 K is indicative of ordered magnetic spin phase. Magnetization and M{\"o}ssbauer data show the superparamagnetic nature of the compound CoSnxFe2−xO4 (x = 0.5). The evolution of the properties as a function of x is discussed on the basis of particle size and Sn concentration. A strong correlation between coercive fields and crystallite sizes measured at room temperature is observed.",

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author = "N. Ngema and Msomi, {J. Z.} and T. Moyo and Strydom, {A. M.} and D. Britz",

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AU - Msomi, J. Z.

AU - Moyo, T.

AU - Strydom, A. M.

AU - Britz, D.

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AB - CoSnxFe2−xO4 (x = 0, 0.1, 0.5, and 1.0) nanoparticles have been synthesized and characterized by XRD, FTIR, TEM, SEM, Mössbauer spectroscopy, and SQUID measurements. XRD data confirm single-phase cubic spinel structure formation and particle size between 10 and 23 nm. The Mössbauer spectra recorded at about 300 K is indicative of ordered magnetic spin phase. Magnetization and Mössbauer data show the superparamagnetic nature of the compound CoSnxFe2−xO4 (x = 0.5). The evolution of the properties as a function of x is discussed on the basis of particle size and Sn concentration. A strong correlation between coercive fields and crystallite sizes measured at room temperature is observed.

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