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Keywords:

  • Catalysts;
  • Encapsulation;
  • Ferromagnetic materials;
  • Nanotubes

Abstract

Novel yard-glass shaped boron nitride nanotubes (YG-BNNTs) periodically filled with Fe nanoparticles were synthesized by a catalytic reaction process of ammonia with boron precursors at 1300 °C. Such novel structures were extensively characterized using X-ray diffraction and advanced electron microscopy. The Fe-filled boron nitride nanotubes show excellent ferromagnetic properties at room temperature with superior chemical stability. A growth model is proposed for the formation of such novel BN nanostructures.