Characterization of nanostructured Mn-Zn ferrites synthesized by coprecipitation method using CTAB
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2020
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Materials Science Forum
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In this work it was investigated the influence of CTAB surfactant concentration on the
synthesis of the compound Mn0.75Zn0.25Fe2O4 by the coprecipitation method. It was also compared
the influence of hydrothermal treatment on the synthesized materials. The magnetic properties were
characterized by AC susceptometry for the determination of the magnetic susceptibility and
magnetic density energy. The phases, crystal structure and morphology of the nanoferrites were
determined by Rietveld analysis of X-ray diffraction data. It was found the presence of two phases:
Franklinite and Akaganeite and it was shown that the samples synthesized only by coprecipitation
presented the tendency to increasing the crystallite sizes of the akaganeite phase and decreasing of
crystallite sizes of the Franklinite phase as a function of CTAB concentration. The samples
submitted to subsequent hydrothermal treatment presented a tendency to decreasing the crystallite
sizes of both phases and increasing in Franklinite phase fraction, compared to the samples
synthesized only by coprecipitation, suggesting that the hydrothermal treatment was effective in
obtaining nanostructured materials of smaller particles.
Como referenciar
MARANHAO, W.C.A.; ICHIKAWA, R.U.; TURRILLAS, X.; YOSHITO, W.K.; SAEKI, M.J.; ORLANDO, M.T.D.; MARTINEZ, L.G. Characterization of nanostructured Mn-Zn ferrites synthesized by coprecipitation method using CTAB. Materials Science Forum, v. 1012, p. 207-211, 2020. DOI: 10.4028/www.scientific.net/MSF.1012.207. Disponível em: http://200.136.52.105/handle/123456789/31632. Acesso em: 10 May 2024.
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