硅酸盐学报2013，Vol.41Issue(6)：756-760,5.DOI:10.7521/j.issn.0454-5648.2013.06.06
铈离子掺杂镍基铁氧体的制备及其吸波性能
Preparation and Microwave Absorption Performance of Cerium Ion Doped Nickel-based Ferrite
摘要
Abstract
The cerium ion doped nickel-based ferrite (NiCexFe2-xO4,x =0.02,0.04,0.06,0.08,0.10) powers were prepared by a sol-gel method.The structure and electromagnetic properties of the powders were characterized by X-ray diffractometer,scanning electron microscope,vibrating sample magnetometer and vector network analyzer,respectively.The results show that the powder is a pure spinel ferrite when the doping amount of cerium x≤0.06.All the powders with different Ce3+ doping amounts exhibit superparamagnetic,and the powder with the Ce3+ doping amount of 0.06 has a maximum saturation magnetization of 59.47 A·m2/kg at room temperature.The real part of the complex permittivity ε' is maximum at the doping amount of 0.08,and becomes minimum at the doping amount of 0.04.The maximum imaginary part ε" is obtained at the doping amount of 0.06 and the minimum ε" is achieved at the doping amount of 0.10.The variation of the cerium doping amount has little effect on the real part of the complex permeability μ' of samples.However,the imaginary part of complex permeability μ" firstly increases and then decreases with increasing the cerium doping amount in the range of 2-6 GHz.The analysis on the impedance matching and absorbing properties of the unintentional doped samples and the doped samples indicates that the matching thickness of the doped sample is reduced by 1.52 mm,its minimum reflectance is decreased by 11.16 dB,and the width of the band with the reflectance less than-10 dB is increased by 1.80 GHz.The electromagnetic wave absorption properties of the nickel ferrite can be improved when x =0.06.关键词
镍基铁氧体/溶胶-凝胶法/稀土掺杂/电磁性能Key words
nickel-based ferrite/ sol-gel method/ rare earth doped/ electromagnetic properties分类
通用工业技术引用本文复制引用
刘渊,刘祥萱,王煊军,陈鑫..铈离子掺杂镍基铁氧体的制备及其吸波性能[J].硅酸盐学报,2013,41(6):756-760,5.基金项目
陕西省自然科学基金(2011JQ2007)资助项目. （2011JQ2007）
