sol-gel法制备之纳米钡铁氧体微波性能的研究  

Study on Microwave Properties of Nanoscale Barium Hexaferrite Prepared by Sol-gel Process

作　　者：卓长平[1] 张雄[1] 李敏[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092

出　　处：《电子元件与材料》2005年第5期14-16,共3页Electronic Components And Materials

基　　金：上海市科学技术委员会纳米专项(0352nm041);高等学校博士学科点专项科研究基金资助课题(2003024701359)

摘　　要：利用柠檬酸sol-gel法合成了六方晶系M型钡铁氧体,采用XRD、原子力显微镜对其晶型、粒径分布及显微结构进行了研究,利用网络分析仪对铁氧体的微波性能进行了分析,并分析了其改性思路.结果表明:实验制得粉体为纯净的M型钡铁氧体,其粒度在50nm左右,并且在4.5～5.5GHz范围内,具有良好的吸波性能.Nano M-type barium hexaferrite was prepared by citrate sol-gel method. Studied was also the crystal form, the grain size distribution, microstructure and microwave properties of the product by XRD, atomic force microscope (AFM) and network analyzer. And analyzed was the method of modification. Obtained results show that the powder is pure M-type barium ferrite, its garain size is about 50 nm and has good absorption ability between 4.5~5.5 GHz.

关 键 词：电子技术 柠檬酸 SOL-GEL法 纳米钡铁氧体 微波性能 

分 类 号：TM25[一般工业技术—材料科学与工程] TM277.2[电气工程—电工理论与新技术]