Microwave absorption enhancement and dual-nonlinear magnetic resonance of ultra small nickel with quasi-one-dimensional nanostructure

The Ni/PVDF nanocomposites were fabricated by a sample hot press process. The maximum reflection loss value of the composites with the filler content of 20 wt% can reach −42.08 dB at 7.4 GHz. The effective bandwidth (reflection loss was less than −10 dB) covers the frequency range from 3.36 to 14.08 GHz with an absorber thickness of 2.0-5.0 mm. The enhanced mechanism of the composites was explained in detail.