液相制备纳米锰锌软磁铁氧体粉体的新方法——氧化–共沉淀相转化法  

A Novel Method for Preparation of MnZn Soft Ferrite Nanocrystalline Powders —Oxidation-coprecipitation Phase Transformation Method

作　　者：李东风[1] 张冬婷[1] 贾振斌[2] 魏雨[2] 

机构地区：[1]河北省邢台学院化学系,河北邢台054001 [2]河北师范大学化学学院,河北石家庄050016

出　　处：《电子元件与材料》2003年第8期31-34,共4页Electronic Components And Materials

摘　　要：以低碳铁皮和氧气为主要原料,采用一种新的工艺(氧化–共沉淀相转化法)低温液相制备出了锰锌软磁铁氧体纳米粉体。通过实验研究,详细探讨了共沉淀的pH值对生成物的化学组成和磁性的影响。并通过XRD、TEM和VSM(振动样品磁强计)分别对生成物的结构、形貌和磁性进行了表征。实验发现:当共沉淀的pH值为13时,共沉淀最完全,相转化程度最高,晶化最好,所制备的锰锌铁氧体粉体的磁性最强。产物的晶型为立方晶系的尖晶石型,形貌为球形,粒径约为20 nm。The spinel MnZn soft ferrite nanocrystalline powers were successfully prepared by a novel methodoxidation- co-precipitation phase transformation method, at low temperature, with low-carbon steel and oxygen as main material. The effect of the pH value of co-precipitation on the chemical constituent and magnetism of products were investigated. Their structure characteristics, morphology and magnetism properties were characterized by XRD, transmission electron microscopy and vibration sample magnetometer. The results show that when the co-precipitation抯 pH value is 13, the co-precipitation is fully transformed and the products have the highest magnetism and the crystal form of the product is spinel of cubic system, the particle shape is sphere and the particle size is 20 nm.

关 键 词：锰锌铁氧体 纳米粉体 氧化-共沉淀相转化法 

分 类 号：TQ138.1[化学工程—无机化工]