Study of hematite-iron phase transformation during iron-carbon core-shell nanoparticles synthesis and investigation of their magnetic and electromagnetic properties

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khani O.; ZARGAR SHOUSHTARI M.; Jazirehpour M.; FARBOD M.

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Journal: Iranian Journal of Physics Research Year:2017 | Volume:17 | Issue:4 Page(s): 531-540

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Title

Study of hematite-iron phase transformation during iron-carbon core-shell nanoparticles synthesis and investigation of their magnetic and electromagnetic properties

Author(s)

khani O. | ZARGAR SHOUSHTARI M. | Jazirehpour M. | FARBOD M. | Issue Writer Certificate

Keywords

iron-carbon core-shell nanoparticlesQ1

hydrothermal methodQ1

hematite-iron phase transformationQ1

microwave absorberQ1

Abstract

In the present study, the structural and microwave absorption properties of the iron nanoparticles and iron-carbon coreshell nanoparticles were studied. The investigated nanoparticles were synthesized by hydrothermal route and by hematite nanoparticles reduction in argon-hydrogen atmosphere. hematite-iron phase transformation during the reduction process was studied by X-Ray Diffraction (XRD). XRD patterns showed that in iron nanoparticles, hematiteiron phase transformation was completed after 30 min annealing, whereas for iron-carbon nanoparticles, the phase transformation completion occurred after 65 min, and wustite (FeO) phase was still present in XRD patterns before 65 min annealing. Moreover, M-H loops, relative complex permittivity (ε ) and permeability (μ ) of the iron nanoparticles and iron-carbon nanocapsules were investigated. According to the ε and μ spectra in 1-18 GHz, the carbon shell can affect microwave properties of the iron nanoparticles. It can reduce microwave permeability and permittivity of the iron nanoparticles-paraffin composites.

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APA: Copy

khani, O., ZARGAR SHOUSHTARI, M., Jazirehpour, M., & FARBOD, M.. (2017). Study of hematite-iron phase transformation during iron-carbon core-shell nanoparticles synthesis and investigation of their magnetic and electromagnetic properties. IRANIAN JOURNAL OF PHYSICS RESEARCH, 17(4 ), 531-540. SID. https://sid.ir/paper/2042/en

Vancouver: Copy

khani O., ZARGAR SHOUSHTARI M., Jazirehpour M., FARBOD M.. Study of hematite-iron phase transformation during iron-carbon core-shell nanoparticles synthesis and investigation of their magnetic and electromagnetic properties. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2017;17(4 ):531-540. Available from: https://sid.ir/paper/2042/en

IEEE: Copy

O. khani, M. ZARGAR SHOUSHTARI, M. Jazirehpour, and M. FARBOD, “Study of hematite-iron phase transformation during iron-carbon core-shell nanoparticles synthesis and investigation of their magnetic and electromagnetic properties,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 17, no. 4 , pp. 531–540, 2017, [Online]. Available: https://sid.ir/paper/2042/en

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