Ni_(0.5)Zn_(0.5)La_(0.05)Fe_(1.95)O_4铁氧体的制备与吸波性能研究  

Preparation and Microwave absorbing Properties of Ni_(0.5)Zn_(0.5)La_(0.05)Fe_(1.95)O_4 Ferrite

作　　者：张学萍[1] 李建军 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110168

出　　处：《有色矿冶》2009年第2期31-32,27,共3页Non-Ferrous Mining and Metallurgy

摘　　要：采用高分子凝胶法制备了Ni0.5Zn0.5La0.05Fe1.95O4铁氧体。当煅烧温度为600℃时,立方晶系尖晶石结构的Ni0.5Zn0.5La0.05Fe1.95O4相初步形成。掺杂稀土La后,Ni0.5Zn0.5La0.05Fe1.95O4铁氧体的吸波性能显著提高,吸收峰向高频移动,其电磁波反射率小于-10 dB的频宽可达2.7 GHz,最小反射率为-15.6 dB。Ni0.5Zn0.5La0.05Fe1.95O4 ferrite was prepared using polyacrylamide gel method. A pure spinel strueture of Ni0.5Zn0.5La0.05Fe1.95O4 formed at 600 ℃. The microwave absorbing property was better for the specimen of Ni0.5Zn0.5La0.05Fe1.95O4 ferrite than the no doped Ni--Zn ferrite specimen. Its absorbing peak moved to higher frenquency. Its minimum reflection loss was -15.6 dB with a -10 dE bandwidth o- ver the extended frequency range of 2.7 GHz.

关 键 词：Ni0.5Zn0.5La0.05Fe1.95O4铁氧体 掺杂 微波吸收性能 

分 类 号：TB383[一般工业技术—材料科学与工程]