纳米锰锌铁氧体的制备与结构特性  

Synthesis and structural properties of nano-crystalline Mn-Zn ferrites

作　　者：郑志刚[1] 钟喜春[1] 张亚辉[1] 曾德长[1] 赵杰[2] 邬曙国 黄冠伟 单连军 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]华南理工大学广州汽车学院,广州510800 [3]深圳市金瑞中核电子有限公司,深圳518031

出　　处：《北京科技大学学报》2008年第5期527-531,共5页Journal of University of Science and Technology Beijing

基　　金：广东省科技计划资助项目(No.2001A1060404,2004B10301009,2006A11002001);广东省自然科学基金资助项目(No.C013003,05300306);广州市科技计划资助项目(No.2002Z2-D2021,2005Z3-D2061,2006Z2-D0131)

摘　　要：采用化学沉淀的高纯氧化铁有效地制备出了MnZn铁氧体——ZnxMn1-xFe2O4(x=0.2～0.4),利用XRD、SEM等手段分析和表征了MnZn铁氧体样品的结构.研究结果表明,纳米晶MnZn铁氧体的制备过程分两个阶段,即先生成Zn-Mn2O4,最后在烧结过程中生成Zn0.2Mn0.8Fe2O4锰锌铁氧体.探讨了在此工艺条件下MnZn铁氧体晶体的生长机理.Nano-crystalline MnZn ferrites, ZnxMn1-xFe2O4（x = 0.2 - 0.4）, were produced by the high energy milling method with high pure iron oxide prepared by chemical precipitation process as the starting material. Their structural properties were analyzed and characterized by means of X-ray diffractometer （XRD） and scanning electron microscopy （SEM）. The results showed that forma- tion of the nano-crystalline MnZn ferrites had two stages; the phase of ZnMn204 grew in the presintering first and then turned into Zn0.2Mn0.8Fe2O4 during the sintering process. The crystal growth mechanism was compendiously discussed.

关 键 词：软磁铁氧体 纳米粉末 烧结 晶体生长 

分 类 号：TM271.2[一般工业技术—材料科学与工程] TG113.22[电气工程—电工理论与新技术]