期刊
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
卷 21, 期 2, 页码 -出版社
UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS
DOI: 10.1590/1980-5373-MR-2017-0764
关键词
magnetite; synthesis; magnetization
资金
- CNPq
- CAPES
- FAPEMIG
Magnetite nanosized particles synthesis was achieved by two different routes. Assessment of micro structure was carried out aiming at comparing the outcome of synthesis parameters on the crystallinity, distribution of particle dimension and magnetic activity of nanosized particles precipitated in aqueous solution. Increasing of the nanoparticles crystallite size by stirring could be evidenced by the results. Temperature does not significantly affect crystallite size and crystallinity. The type of precursor was the factor that most contributed to the definition of crystallinity and particle size distribution. The route which used FeSO4 7H(2)O as precursor favored large crystallite sizes and crystallinity, while the route which used Fe2SO4 7H(2)O and FeCl3.6H(2)O as precursors resulted in much smaller crystallite sizes and crystallinity.
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