溶胶-凝胶法与微波燃烧法制备CoFe_2O_4纳米颗粒的比较研究  

Comparative Study of CoFe_2O_4 Ferrite Nanosized Powders by the Sol-gel Method and Microwave Combustion Method

作　　者：王丽[1] 刘锦宏[1] 李发伸[1] 

机构地区：[1]兰州大学教育部磁学与磁性材料重点实验室,甘肃兰州730000

出　　处：《磁性材料及器件》2005年第6期30-32,共3页Journal of Magnetic Materials and Devices

基　　金：教育部博士点基金资助项目(20020730023)

摘　　要：采用溶胶-凝胶法及微波燃烧法制备CoFe2O4纳米颗粒,用X射线衍射(XRD)研究了Co铁氧体纳米颗粒的结构。两种方法均制成尖晶石纳米晶材料,同溶胶-凝胶法相比,微波燃烧法可以大大缩短铁氧体生成的时间。但是随微波燃烧时间延长出现了少量非纯相。测量了两种方法制备的CoFe2O4纳米颗粒的穆斯堡尔谱,并且比较了二者的超精细参数。Sol-gel and microwave combusion method were used to prepare CoFe204 nanosized powders, The crystal structure of fine powders has been investigated by X-ray diffraction, Compared to sol-gel method, the formation time of ferrite by microwave combusion method can be shortened enormously. Furthermore, with prodlonging combustion time, a small amount of impure phase appears. Mossbauer spectra were measured and the ultrafine parameters were compared for two methods.

关 键 词：Co铁氧体纳米颗粒 溶胶-凝胶法 微波燃烧法 XRD谱 穆斯堡尔谱 

分 类 号：TM277.1[一般工业技术—材料科学与工程]