沸石基纳米磁性材料CoFe_2O_4制备及表征  

Preparation and characterization of magnetic nano-material CoFe_2O_4 based on zeolite

作　　者：李松波[1] 赵文玉[1] 张英杰[1] 

机构地区：[1]内蒙古科技大学化学与化工学院,包头014010

出　　处：《化工新型材料》2013年第6期132-133,145,共3页New Chemical Materials

基　　金：内蒙古教育厅项目(NJ06140);内蒙古自然科学基金资助项目(20080404MS0204)

摘　　要：采用水热分散法,通过分步化学反应,简便有效地制备了沸石基纳米磁性材料,并用XRD、IR和振动样品磁强计(VSM)对所得样品进行了相关测试。测试结果表明,体相CoFe2O4的磁学参数:矫顽力Hc、饱和磁化强度Ms和剩余磁化强度Mr均有较大幅度的降低。即由体相强磁性材料变为纳米非晶软磁材料,这是纳米粒子的小尺寸效应和量子尺寸效应所致,并且XRD、IR和磁滞回线表征结果也佐证此结论。The magnetic nano-materials were synthesized conveniently and effectively through hydrothermal frac tionated reaction and dispersion method. The related tests were conducted by XRD, IR and VSM. The results showed that the magnetism parameters of bulk CoFe2 04, such asc oercivity Hc, saturation magnetization Ms and remanent magnetization Mr were reduced significantly. It means that strong magnetic bulk material was changed to nano-amorphous and soft mag- netic material. It was caused by the quantum size effect and quantum size effect of nanometer particles. Moreover, XRD, IR and magnetic hysteresis loop characterization results supported this conclusion as well.

关 键 词：钴铁氧体 水热法 磁性能 沸石分子筛 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.812[理学—无机化学]