Microwave absorption properties of Fe_3O_4/CuPc hybrid material with cooperative dual nonlinear dielectric/magnetic resonance

摘要

Fe_3O_4/CuPc hybrid material, where the CuPc not only interlinked but also be embedded within the Fe_3O_4 microspheres, was synthesized via solvothermal method. The electromagnetic properties of the sample showed cooperative nonlinear dielectric/magnetic resonance in X-band and Ku-band. The proposed equivalent filter circuit model well explained the dual nonlinear dielectric resonances. The magnetic resonances were proposed to be generated from the natural resonance of the Fe_3O_4 and heterogeneous interfaces in/between microspheres severally. The microwave absorption of the sample obtained two optimal nesting peaks of - 35 and -33 dB at 12.6 and 15.8 GHz with thickness of 2.6 and 1.8 mm respectively.