Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/244209
Type: Artigo
Title: Intrinsic dependence of the magnetic properties of CoFe2O4 nanoparticles prepared via chemical methods with addition of chelating agents
Author: Mendonça, E. C.
Tenório, M. A.
Mecena, S. G.
Zucolotto, B.
Silva, L. S.
Jesus, C. B. R.
Meneses, C. T.
Duque, J. G. S.
Abstract: In this work, the effect of addition of different chelating agents on the magnetic properties of cobalt ferrite nanoparticles produced by the combining of both en precipitation and hydrothermal methods is reported. The Rietveld analyses of X-ray diffraction patterns reveal that our samples are single phase (space group: Fd-3m) with small average sizes. The weight losses observed in the thermogravimetric measurements together with the M x H curves show that the organic contamination coming from chelating agent decomposition can give rise to misinterpretation of the magnetization measurements. Besides, analyses of the zero-field-cooled (ZFC) and field cooled (PC) magnetization measurements and the M x H curves measured at room temperature allows us to state that both the average blocking temperature and particles size distribution are sensitive to the kind of chelating agent. (C) 2015 Elsevier B.V. All rights reserved.
In this work, the effect of addition of different chelating agents on the magnetic properties of cobalt ferrite nanoparticles produced by the combining of both en precipitation and hydrothermal methods is reported. The Rietveld analyses of X-ray diffraction patterns reveal that our samples are single phase (space group: Fd-3m) with small average sizes. The weight losses observed in the thermogravimetric measurements together with the M x H curves show that the organic contamination coming from chelating agent decomposition can give rise to misinterpretation of the magnetization measurements. Besides, analyses of the zero-field-cooled (ZFC) and field cooled (PC) magnetization measurements and the M x H curves measured at room temperature allows us to state that both the average blocking temperature and particles size distribution are sensitive to the kind of chelating agent.
Subject: Superparamagnetismo
Ferrita
Cobalto
Country: Holanda
Editor: Elsevier
Citation: Intrinsic Dependence Of The Magnetic Properties Of Cofe2o4 Nanoparticles Prepared Via Chemical Methods With Addition Of Chelating Agents. Elsevier Science Bv, v. 395, p. 345-349 DEC-2015.
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2015.07.108
Address: https://www.sciencedirect.com/science/article/pii/S0304885315304169
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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