Nucleation Features of the Magnetite Fe3O4 Nanoparticles with the Size of 30-40 Nm for the Hyperthermia Applications

Ping Zhu; Lin Zhuang; Rui Liang; Yue Xu; Hui Shen

doi:10.4028/www.scientific.net/AMR.287-290.77

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290Nucleation Features of the Magnetite Fe3O4...

Nucleation Features of the Magnetite Fe₃O₄ Nanoparticles with the Size of 30-40 Nm for the Hyperthermia Applications

Abstract:

Magnetite Fe₃O₄ nanoparticles of 30-40 nm with a low coercivity are ideal for the hyperthermia applications. The Fe₃O₄ particles were prepared by oxidizing Fe²⁺ iron with a weak oxidant NaNO₃ in a N₂-deaerated aqueous NaOH solution (pH=12-13) at various temperatures below 30 °C. The nucleation features are explored. When the reaction temperature increases, the particle size decreases and the nucleation time shortens. At the two stages of the synthesis reaction, the coercivity is mainly affected by the saturation magnetic flux density and particle size, respectively.

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Periodical:

Advanced Materials Research (Volumes 287-290)

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77-80

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https://doi.org/10.4028/www.scientific.net/AMR.287-290.77

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Online since:

July 2011

Authors:

Ping Zhu, Lin Zhuang, Rui Liang, Yue Xu, Hui Shen

Keywords:

Coercivity, Magnetite Nanoparticles (MNPS), Nucleation Feature

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