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Fe64Ni36 nanoparticles were fabricated by exploding wire in ethanol, and silica was coated on the Fe-Ni nanoparticles by the thermal decomposition of tetraethyl orthosilicate (TEOS). X-ray diffraction was used to investigate phases of theas-prepared and coated nanopowder. It was showed that coated nanopowder was formed in the γ-Fe-Ni phase. The coated nanoparticles were characterized by transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), Thermogravimetric/Differential Thermal Analysis (TG/DTA) and Fourier Transform Infrared Spectroscopy (FT-IR). The analysis revealed that Fe-Ni nanoparticles were coated by silica layer and they formed core-shell structure with a uniform layer of silica. Magnetic properties of the as-prepared and coated nanopowder were examined with a vibrating sample magnetometer (VSM).

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Preparation and Characterization of Core-Shell Structure Fe64Ni36/Silica Nanoparticles

  • 会议论文

  • 发表日期：

    2026年

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  • Duong Van Thiet,
  • Jin Chun Kim,
  • Luong Huu Bac

摘要

Fe64Ni36 nanoparticles were fabricated by exploding wire in ethanol, and silica was coated on the Fe-Ni nanoparticles by the thermal decomposition of tetraethyl orthosilicate (TEOS). X-ray diffraction was used to investigate phases of theas-prepared and coated nanopowder. It was showed that coated nanopowder was formed in the γ-Fe-Ni phase. The coated nanoparticles were characterized by transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), Thermogravimetric/Differential Thermal Analysis (TG/DTA) and Fourier Transform Infrared Spectroscopy (FT-IR). The analysis revealed that Fe-Ni nanoparticles were coated by silica layer and they formed core-shell structure with a uniform layer of silica. Magnetic properties of the as-prepared and coated nanopowder were examined with a vibrating sample magnetometer (VSM).