材料科学与工程学报2011，Vol.29Issue(1)：30-34,5.
锂镧铁氧体/PANI纳米复合材料的磁性质和吸波性能
Magnetic and Microwave Absorption Properties of Lithium-lanthanum Ferrite and PANI Nano-Composites
摘要
Abstract
LiFe5O8 and LiLa0.03 Fe4.97O8 ferrite nanopowders were prepared by sol-gel self-propagating combustion method, and polyaniline (PANI) doped with a mixture of sodium dodecylbenes ulfonate and hydrochloric acid (LAS-HCl)was synthesized by chemical method. Ferrite-PANI nano-composites were prepared by high energy ball milling using powders of ferrite and PANI as raw materials. All the samples were characterized by X-ray diffractometry (XRD), vibrating sample magnetometry (VSM) and vector network analyzer. The results show that the diffraction peaks of LiLa0.03Fe4.97O8-PANI composites after milling have slight shifts due to lattice expansion. The specific saturation magnetization of the composites decreases, while the coercivity increases. Compared with pure nanoferrites, the good impedance matching characteristics of the composites improved their dielectric loss and magnetic loss, and magnetic resonance loss increases significantly, but the microwave absorbing performance of LiLa0.03Fe4.97O8/PANI is inferior to that of LiFe5O8/PANI.关键词
聚苯胺/锂镧铁氧体/自蔓延燃烧/纳米粉末/微波吸收Key words
PANI/ Li-La ferrite/ self-propagating combustion/ nanopowder/ microwave absorption分类
信息技术与安全科学引用本文复制引用
卢佃清,刘学东,徐超,周朕..锂镧铁氧体/PANI纳米复合材料的磁性质和吸波性能[J].材料科学与工程学报,2011,29(1):30-34,5.基金项目
江苏省高校自然科学研究计划资助项目(06KJD430014) （06KJD430014）
