Synthesis of Ni3N/SiO2 nanocomposites and investigation of their intrinsic static and dynamic magnetic properties

Abstract

Ni₃N/SiO₂ nanocomposites were prepared via nitriding of a Ni/SiO₂ nanocomposite precursor in flowing ammonia. The intrinsic static and dynamic magnetic properties of the as-prepared samples were investigated with a superconducting quantum interference device and an Agilent N5230A network analyzer, respectively. According to our results, it was found that pure phase nanocrystalline Ni₃N could be obtained after the Ni/SiO₂ nanocomposite precursor was calcined under a flow of NH₃ at 300 °C, and the as-obtained nanocrystalline Ni₃N is non-ferromagnetic under a static magnetic field and non-magnetic under a dynamic electromagnetic field.