摘要
以硫酸亚铁、硫酸锰和硫酸锌为原料,采用碳酸盐共沉淀法制备了Mn1–xZnxFe2O4(x=0,0.2,0.4,0.5和0.6)铁氧体微粉。通过TGA-DSC、XRD和SEM等测试手段,分析其物相、微观结构和形貌,并用振动样品磁强计(VSM)测量其室温磁滞回线,重点探讨了锰锌铁氧体前驱粉在热处理过程中发生的反应。磁性能测试表明,随着Zn2+含量的增加,锰锌铁氧体微粉的比饱和磁化强度先增加后降低,当x(Zn2+)=0.2时,微粉的比饱和磁化强度最大,为84.24A·m2·kg–1。
Mn1-xZnxFe2O4 （x = 0, 0.2, 0.4, 0.5 and 0.6） ferrite micropowder was prepared by carbonate co-precipitation method from metal sulfate solution using ammonium bicarbonate as precipitant. The physical phase, microstructure and morphology of the micropowder were characterized by TGA-DSC, XRD and SEM. Its hysteresis loops （room temperature） were measured by VSM. The chemical reactions during the heat-treatment of the precursor prepared by co-precipitation were discussed. The results show that the specific saturation magnetization of MnZn ferrite micropowder increases first, and then decreases with the increase of Zn^2＋ content, the maximum of specific saturation magnetization is 84.24 A · m^2· kg^-1 at x = 0.2 （Zn^2＋ content）.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第3期53-56,共4页
Electronic Components And Materials
基金
国防科工委资助项目
关键词
无机非金属材料
锰锌铁氧体微粉
碳酸盐共沉淀法
热处理机理
磁性能
non-metallic inorganic material
MnZn ferrite micropowder
carbonate co-precipitation method
heat-treatment mechanism
magnetic properties
作者简介
余维清（1982-），女，江苏南京人．研究生．主要从事磁性材料的研究，Tel：13626101997，E-mail：swq_njut@163．com。
通讯作者：丘泰（1951-），男，江苏南京人，教授，博士，主要研究方向为新型陶瓷材料、陶瓷基复合材料，Tel：（025）83587262，E-mail：qiutai@nlut.edu.cn；
