Carbon microtube/Fe_3O_4 nanocomposite with improved wave-absorbing performance

摘要

We report a facile strategy to prepare a carbon microtube (CMT)/Fe_3O_4 nanocomposite with superior performance. The Fe_3O_4 nanoparticles obtained are about 400 nm in size and homogeneously anchor around the CMTs. The results show that the maximum reflection loss of the CMT/Fe_3O_4 nanocomposite is about — 40 dB at 10.64 GHz and the eflectivc absorbing band width is about 4 GHz with a thickness of 2.0 mm, highlighting the importance of the CMTs with nanomagnetic particles for wave-absorbing applications.