Synthesis of Monodisperse Fe3O4 Microspheres and Effect of the Precursor Concentration

De Hui Sun; De Xin Sun; Ming Xing Han

doi:10.4028/www.scientific.net/AMR.183-185.2327

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 183-185Synthesis of Monodisperse Fe3O4 Microspheres and...

Synthesis of Monodisperse Fe₃O₄ Microspheres and Effect of the Precursor Concentration

Abstract:

In present work, we synthesized monodisperse Fe₃O₄ microsphere using a free-surfactant solvothermal reduction route and investigated effect of the precursor concentration (FeCl₃∙6H₂O and NaAc) on microsphere sizes under other reaction conditions held constant. The morphologies, structures, and magnetism of the products were characterized by SEM, XRD, FTIR and VSM. The results showed that the Fe3O4 microsphere with a tunable average size range from 120 nm to 300 nm is composed of many Fe₃O₄ collective nanoparticles. Their average diameters increased with increase of precursor FeCl₃∙6H₂O concentration but decreased with increase of precursor NaAc concentration. The X-ray diffraction (XRD) pattern confirmed that the Fe₃O₄ microspheres belong to cubic structure. Magnetic investigation reveals that the Fe₃O₄ microspheres have higher saturation magnetization and negligible coercivity at room temperature.

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Periodical:

Advanced Materials Research (Volumes 183-185)

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2327-2330

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.183-185.2327

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Online since:

January 2011

Authors:

De Hui Sun, De Xin Sun, Ming Xing Han

Keywords:

Fe₃O₄, Micro-Sphere, Monodisperse, Solvothermal Method

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