M型铁氧体结晶度分析及其对磁性能的影响  

Crystallinity Analysis of M-Type Ferrite and Its Effect on Magnetic Properties

作　　者：牟春阳 曹晓晖[1] 关山月[1] 孟锦宏[1] MU Chunyang;CAO Xiaohui;GUAN Shanyue;MENG Jinhong(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《电镀与精饰》2022年第10期54-59,共6页Plating & Finishing

基　　金：装备发展部预研项目(xx3040)。

摘　　要：本文以M型钡铁氧体BaFe_(12)O_(19)为研究对象,以Jade软件为拟合工具,以BaFe_(12)O_(19)的结晶度计算和探究其合成因素/方法、结晶度及磁性间的内在联系为主要研究目的。采用化学共沉淀法及二次化学共沉淀法制备BaFe_(12)O_(19),对BaFe_(12)O_(19)的XRD谱实现了全谱分峰拟合,通过拟合峰面积计算了化学共沉淀法不同摩尔比n(Fe)/n(Ba)和二次化学共沉淀法不同焙烧温度制备的BaFe_(12)O_(19)的结晶度。结果表明:一定范围内降低n(Fe)/n(Ba)、升高焙烧温度或改变合成方法,可调控BaFe_(12)O_(19)的结晶度,进而引起其磁性参数M_(s)和H_(c)的提高。且结晶度不是M_(s)和H_(c)的单一影响因素,其与片状颗粒径向尺寸均对M_(s)和H_(c)影响明显。M-type barium ferrite BaFe_(12)O_(19)was prepared by chemical coprecipitation and secondary chemical coprecipitation methods,and the dependence of crystallinity on synthesis factors and magnet‐ic properties was investigated by Jade software.The XRD curves of BaFe_(12)O_(19)were matched by profile peak fit method,and the crystallinities of BaFe_(12)O_(19)prepared by chemical coprecipitation method with different molar ratio of n(Fe)/n(Ba)and secondary chemical coprecipitation method at different calcination temperatures were calculated.The results showed that the crystallinity of BaFe_(12)O_(19)could be regulated by decreasing molar ratio of n(Fe)/n(Ba),increasing the calcination temperature or changing the synthesis method within a certain range,which would lead to the increase of its magnetic parameters M_(s)and H_(c).And the crystallinity was not the single factor affecting M_(s)and H_(c),the radial size of flaky particles also had obvious effects on M_(s)and H_(c).

关 键 词：BaFe_(12)O_(19) 结晶度 分峰拟合 磁性 

分 类 号：TB34[一般工业技术—材料科学与工程]