摘要
采用机械合金化的方法制备纳米晶 L i Fe5O8和 L i Fe4.994Dy0 .0 0 6O8,在不同温度下进行热处理 ,并研究了它们的吸波性能 .实验结果表明 :Li Fe5O8在 7～ 1 2 GHz频段内有三个吸收峰 ,具有一定的吸波性能 .当加入少量的 Dy2 O3 后 ,吸收峰的位置发生了变化 ,其吸波性能得到显著的提高 .
LiFe 5O 8 and LiFe 4.994 Dy 0.006 O 8 nanocrystalline powders were synthesized by MA and were treated at different temperature. Their absorption properties were studied. The results show that LiFe 5O 8 has three absorption peaks between 7 GHz and 12 GHz.With Dy substitution for Fe. The absorptive peaks are changed and the absorption is remarkably increased. So this absorptive material has prospects for development.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第4期407-410,共4页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自治区自然科学基金资助项目 (2 0 0 1 0 90 9-1 0 )
关键词
纳米材料
锂铁氧体
Dy2O3掺杂
微波吸收
nanocrystalline material
Lithium Ferrite
Dy 2O 3 dopant
microwave absorption
