摘要
采用化学共沉淀法制备了纳米Ni0.5Zn0.5CexFe2-xO4（x=0,0.005,0.01,0.015）铁氧体吸波材料,用AV3618型微波矢量网络分析仪测试了样品在8.2-12.5GHz范围内的微波吸收特性,实验结果表明：稀土元素铈的含量影响材料的吸波性能,当x=0.01时,纳米Ni0.5Zn0.5CexFe2-xO4铁氧体的吸波性能最佳。对于Ni0.5Zn0.5Ce0.01Fe1.99O4铁氧体吸波材料,当涂层厚度为1mm时,在测试频段内有三个吸收峰,在8.8GHz处,其最大吸收衰减量为15.4dB,10 dB以上带宽达3.8GHz,适量掺杂稀土元素铈是提高镍锌铁氧体吸波材料性能的一种有效途径。
Nanometer Ni0.5Zn0.5CexFe2-xO4（x=0,0.005,0.01,0.015） were prepared by the chemistry coprecipitation method, and microwave absorption coefficient in the rage of 8.2-12.5GHz were measured by AV3618 net analyzing apparatus. It shows that the content changing of Ce would affect the microwave absorbing properties. When the thickness of Ni0.5Zn0.5CexFe2-xO4 is 1.0mm and x=0.01, the capability of microwave absorbing is the best one. There are three absorption peaks;The maximum absorption quantity is 15.4dB when the frequency is 8.8GHz, and effective band width reaches 3.8GHz above 10dB. So adulteration of appropriate amount of rear earth Ce is an effective way to improve the microwave absorbing properties of the Ni-Zn ferrite.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2008年第3期58-62,共5页
Journal of Materials Engineering
基金
内蒙古自治区教育厅基金资助项目(NJ04097)
关键词
铈
化学共沉淀法
纳米铁氧体
微波吸收材料
cerium
chemistry coprecipitation method
nanometer ferrite
microwave absorbing material
