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      Síntese e caracterização de nanopartículas de NiFe2O4 utilizando o método de sol-gel/combustão e combustão homogênea Translated title: Synthesis and characterization of NiFe2O4 nanoparticles using the sol-gel/combustion and homogeneous combustion method

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          Abstract

          O presente trabalho teve por finalidade a síntese de nanopartículas de NiFe2O4 utilizando o método de sol-gel/combustão e combustão homogênea. As nanopartículas foram caracterizadas por difração de raios X, ressonância magnética eletrônica (RME) e espectroscopia de infravermelho de transformada de Fourier (IV-FT). As medidas de raios X foram usadas para caracterizar e estimar o tamanho médio dos cristalitos. Nos espectros de infravermelho, são observadas a formação da fase ferrítica e a influência do tamanho médio de cristalitos em todas as amostras que apresentaram alto grau de cristalinidade, já que a banda de infravermelho na faixa de 600-550 cm-1 é característica por sítios tetraédricos da ferrita. Os espectros de ressonância magnética eletrônica mostram que as partículas sintetizadas possuem dimensão nanométrica.

          Translated abstract

          This work aimed at the synthesis of NiFe2O4 nanoparticles using the methods of sol-gel combustion and homogeneous combustion. The nanoparticles were characterized by X-ray diffraction (XRD), electron magnetic resonance (EMR) spectroscopy and Fourier transform infrared (FTIR). The X-ray measurements were used to characterize and estimate the average size of crystallites. In the infrared spectra the formation of ferrite phase and the influence of the average size of crystallites in all samples which exhibited a high degree of crystallinity are observed, since the infrared band in the range 550 - 600 cm-1 is characteristic of tetrahedral sites of the ferrite. The electron magnetic resonance spectra show that nanoscale particles were synthesized.

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          Most cited references7

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          "Magnetization and Mössbauer study of cobalt ferrite particles from nanophase cobalt iron carbonate"

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            "Synthesis of cobalt ferrite nanoparticles using combustion waves"

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              "Synthesis of MgFe2O4 nanocrystallites under mild conditions"

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rmat
                Matéria (Rio de Janeiro)
                Matéria (Rio J.)
                Rede Latino-Americana de Materiais (Rio de Janeiro )
                1517-7076
                2013
                : 18
                : 2
                : 1323-1328
                Affiliations
                [1 ] Instituto Militar de Engenharia Brazil
                [2 ] Instituto Militar de Engenharia Brazil
                Article
                S1517-70762013000200008
                10.1590/S1517-70762013000200008
                681c9769-593d-4372-8467-ed165c4cd62c

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1517-7076&lng=en
                Categories
                CONSTRUCTION & BUILDING TECHNOLOGY
                MATERIALS SCIENCE, MULTIDISCIPLINARY
                METALLURGY & METALLURGICAL ENGINEERING

                General materials science,General architecture,General engineering
                Magnetic nanoparticles,Nanopartículas magnéticas,sol-gel/combustão,combustão homogênea,Sol-gel/ combustion,Homogeneous combustion

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