Electromagnetic Wave Absorption Characteristics of BaFe9(Ni0.5Cu0.5Ti)3/2O19
BaFe9 (Ni0.5Cu0.5Ti)3/2Oi9 hexaferrite was prepared by sol-gel process. The ferrite powders possess hexagonal shape and are well separated from one another. The powders of these ferrites were mixed with polyvinylchloride (PVC) plasticizer to be converted into a microwave absorbing composite ferrite with the thickness of 1.8 nun. X-ray diffraction (XRD), transmission electron microscope (TEM), vibrating sample magnetometer, and vector network analyzer were used to analyze its structure, electromagnetic and microwave absorption properties. The results showed that, the magnetoplumbite structures for all the samples have been formed. Also the present investigation demonstrates that microwave absorber using BaFe9 (Ni0.sCuo.sTi)3/2Oi9/ polyvinylchloride with matching thickness of 1.8mm can be fabricated for the applications over 15 GHz, with reflection loss more than -25dB for specific frequencies, by controlling the molar ratio of the substituted ions.
barium ferrite reflection loss microwave wideband hysteresis
A.Ghasemi X.X.Liu A.Morisako
Spin Device Technology Center,Faculty of Engineering,Shinshu University,Nagano,Japan *JSPS Fellow
国际会议
The 10th International Conference on Ferrites(2008中国国际铁氧体研讨会)
成都
英文
318-320
2008-10-10（万方平台首次上网日期，不代表论文的发表时间）