镧掺杂钡铁氧体-聚苯胺复合材料的制备与表征  

Preparation and Characteristics of Lanthanum-doped Barium Ferrite-polyaniline Composites

作　　者：谢宇[1] 张炜平[1] 魏娅[1] 黄启飞[1] 杨海丹[1] 江鸳飞[1] 侯晓宾[1] 

机构地区：[1]南昌航空大学环境与化学工程学院

出　　处：《安全与电磁兼容》2011年第1期37-39,共3页Safety & EMC

基　　金：国家自然科学基金(20904019);航空科学基金(2008ZF56017);中国科学院光化学转换与功能材料重点实验室开放课题(PCOM201028);江西省教育厅科技项目(GJJ11501)

摘　　要：采用溶胶凝胶法制备了镧掺杂钡铁氧体(BaLaxFe12-xO19,x=0、0.01、0.03、0.05)。通过XRD表征表明它们的结晶性良好,均为单一的磁铅石型钡铁氧体晶相结构,随镧掺杂量的增加,得到的镧掺杂钡铁氧体的粒径随之减小。采用溶液原位聚合法制备镧掺杂钡铁氧体-聚苯胺复合材料,红外光谱分析可知聚苯胺-铁氧体纳米复合物的生成,揭示了聚合物分子链与铁氧体纳米粒子之间存在一定的键合作用,TEM表征显示复合材料粒子呈球形,且粒径为60～80 nm左右。随着铁氧体含量的降低,样品的磁性能随之降低,即铁氧体含量是影响磁性能的主要因素。Lanthanum-doped barium ferrite（BaLaxFe12-xO19,x=0,0.01,0.03,0.05） was prepared by the sol-gel.XRD analysis showed that the samples had good crystallization and were one of the magnetic type barium ferrite crystal structures.With increasing of the lanthanum doping,the barium ferrite particle size was also decreased.At the same time in-situ polymerization in solution was used to prepare lanthanum-doped barium ferrite-polyaniline composites.Fourier transform infrared spectroscopy suggested that the lanthanum-doped barium ferrite-polyaniline composites had been produced.TEM observation showed that the sample was spherical and that complex particle size was about 60～80 nm.The sample test results of magnetic properties showed that as the ferrite content decreased the sample magnetic properties decreased,which indicated that the ferrite content was the main factor affecting the magnetic properties.

关 键 词：钡铁氧体 镧掺杂 聚苯胺 复合材料 

分 类 号：TM277[一般工业技术—材料科学与工程]