Growth of Magnetic Yard-Glass Shaped Boron Nitride Nanotubes with Periodic Iron Nanoparticles


  • We would like to thank Mr. Kuiyi Hu, Bo Wu, and Hua Guo for their assistance. This work was supported by the Key Research Program of MOST, China (2006CB932703) and Australian Research Council through its Centres of Excellence Scheme.


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.