Synthesis and microwave absorbing mechanism of two-layer microwave absorbers containing Li₀.₃₅Zn₀.₃Fe₂.₃₅O₄ micro-belts and nickel-coated carbon fibers

The Li₀.₃₅Zn₀.₃Fe₂.₃₅O₄ micro-belts were prepared by cotton template method. The nickel-coated carbon fibers were obtained by electroless plating method. The formation mechanism of the ferrite micro-belt was studied. The microwave absorption properties of the Li₀.₃₅Zn₀.₃Fe₂.₃₅O₄ micro-belts/nickel-coated carbon fibers composites were investigated in the frequency range of 30–6000MHz. The absorbers of the Li₀.₃₅Zn₀.₃Fe₂.₃₅O₄ micro-belts/nickel-coated carbon fibers composites have much better microwave absorption properties than the nickel-coated carbon fibers absorbers, and the microwave absorption properties of the composites are influenced by the thickness of the absorber.