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Synthesis and Characterization of Citrate Coated Magnetite Nanoparticles

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Abstract

Citrate coated magnetite nanoparticles (NPs) were prepared by a modified coprecipitation technique in the presence of sodium citrate and sodium acetate. The citrate coated NPs showed a close particle size distribution, superparamagnetic behavior, and single crystalline nature. Water dispersions of magnetite NPs were analyzed by laser diffraction; this technique revealed that the NPs form micrometer sized aggregates. It was found that the size of the aggregates depends strongly on the time of ultrasonic agitation and the citrate shell.

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Acknowledgements

We appreciate the fruitful discussion of Socorro Garcia-Guillermo, Jesus Garcia-Najera, Sergio Rodriguez, and Enrique Diaz-Barriga. This work was supported by the Multidisciplinary Projects Initiative of Cinvestav. RGR thanks to PROMEP and DGEST.

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Authors and Affiliations

  1. Cinvestav Unidad Saltillo, Carr. Saltillo-Monterrey Km. 13, Ramos Arizpe, 25900, Mexico

    R. G. RuizMoreno & A. I. Martinez

  2. Departamento de Fisica Aplicada, Cinvestav Unidad Merida, C.P. 97310, Merida, Yucatan, Mexico

    R. Castro-Rodriguez & P. Bartolo

  3. Instituto Tecnológico de Saltillo, Venustiano Carranza 2400, 25280, Saltillo, Coahuila, Mexico

    R. G. RuizMoreno

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  1. R. G. RuizMoreno
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  2. A. I. Martinez
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  3. R. Castro-Rodriguez
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  4. P. Bartolo
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Correspondence to A. I. Martinez.

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RuizMoreno, R.G., Martinez, A.I., Castro-Rodriguez, R. et al. Synthesis and Characterization of Citrate Coated Magnetite Nanoparticles. J Supercond Nov Magn 26, 709–712 (2013). https://doi.org/10.1007/s10948-012-1790-z

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  • DOI: https://doi.org/10.1007/s10948-012-1790-z

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