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Preparation and Microwave Absorption Properties of Porous Structure Soft/Hard Magnetic Ni0.5Zn0.5Fe2O4/SrFe12O19 Composite Fibers |
Author Name | Affiliation | E-mail | ZHOU Jian-Wei | School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China | | XING Xiao-Tong | School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China | | HAN Qiu-Xia | School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China | | MENG Xian-Feng | School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China | mxf2029@ujs.edu.cn | LU Chun-Hua | Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China | |
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Abstract: Soft/hard magnetic Ni0.5Zn0.5Fe2O4/SrFe12O19 composite fibers with porous structure are prepared using a combination of sol-gel and electrospinning method. The crystal structure, micromorphology and electromagnetic properties of the as-prepared composite fibers are characterized by thermogravimetric analyzer (TG-DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), N2 adsorpation-desorpation and vector network analyzer (VNA). The results indicate that after being heat treatment at 900℃, the obtained composite fibers are of three-dimensional porous structure. When the mass ratio of soft phase/hard phase is 1:3, the composite fiber has a large surface area value (55 m2·g-1). The microwave absorption properties results demonstrate that when the coating layer thickness is 3.5 mm, the composite fiber has a minimum reflection loss (RL) value (-31.9 dB). At the same time, the bandwidth of the RL values less than -10 dB in the frequency range of 2~18 GHz reaches 10.5 GHz, which covers all X-band (8.2~12.4 GHz) and Ku-band (12.4~18 GHz) and shows excellent wide band microwave absorption performance. |
Keywords: Ni0.5Zn0.5Fe2O4/SrFe12O19 electrospinning method soft/hard magnetic fiber microwave absorption properties |
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ZHOU Jian-Wei,XING Xiao-Tong,HAN Qiu-Xia,MENG Xian-Feng,LU Chun-Hua.Preparation and Microwave Absorption Properties of Porous Structure Soft/Hard Magnetic Ni0.5Zn0.5Fe2O4/SrFe12O19 Composite Fibers[J].Chinese Journal of Inorganic Chemistry,2018,34(6):1043-1050. |
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