Spectroscopic characterization of superparamagnetic particles of thermolytic products of ferric sulphate hydrates |
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| Authors: | PC Morais K Skeff Neto |
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| Institution: | Grupo de Física Molecular e Magnetismo, Departamento de Física, Universidade de Brasília 70 910-Brasília-DF, Brasil |
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| Abstract: | Superparamagnetic particles of chemically pure samples, in the system Fe(OH)SO4/Fe(OH)SO4·(H2O), are produced by thermal decomposition of ferric sulphate hydrates. The control of particle size distribution is achieved by successive hydration and dehydration processes monitored by X-ray diffraction, electron microscopy, Mössbauer and IR spectroscopy. The particle size modification is related for the particle growth and two mechanisms are suggested thereon. |
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| Keywords: | Author to whom correspondence should be addressed |
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