Synthesis, Characterization and Properties of PANI/(La-Nd Doped BaFe12O19) Composites
La-Nd co-doped barium hexaferrites, Ba0.7(LamNdn)0.3Fe12O19 (D-BaM), were successfully prepared by sol-gel method.PANI / D-BaM composites were synthesized by in-situ polymerization in solution.The structure, morphology and properties of samples have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), four-probe conductivity tester and vector network analyzer.The XRD patterns showed that the crystal structure of all the samples exist as M-type phases.The SEM images revealed that the particles presented a hexagonal platelet-like morphology.The magnetic properties could be improved by substitutions of La and Nd ions.The saturation magnetization (Ms) and coercive force (Hc) increased with the change of La / Nd ratio to the maximum at La / Nd =3∶1.The doped particles have also been embedded in conductive PANI to prepare electromagnetic materials, and the conductivity kept on the order of 10-2.The microwave absorbing properties of composites at 30 MHz-6 GHz improved obviously, the peak value of reflection loss could reach-7.5 dB.
PANI/(La-Nd doped BaFe12O19) Magnetic Microwave absorbing
Yan Wang Jun Wang Xiao-fei Zhang Ya-qing Liu
Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North Univers School of Materials Science and Engineering, North University of China, Taiyuan 030051, Peoples Rep School of Mechanical and Power Engineering, North University of China, Taiyuan 030051, Peoples Repu
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
327-334
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）