Sol-Gel自燃烧法制备MnZn铁氧体  

Preparation of MnZn Ferrites by Sol-Gel Auto-Combustion Method

作　　者：卢超[1,2] 徐光亮[1,2] 刘桂香[1,2] 曾丽文[1,2] 余洪滔[1,2] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010 [2]西南科技大学新材料研究所,材料科学与工程学院,四川绵阳621010

出　　处：《压电与声光》2011年第5期811-814,共4页Piezoelectrics & Acoustooptics

基　　金：四川省教育厅重点基金资助项目(08ZA009);西南科技大学博士基金资助项目(08zx0102)

摘　　要：用X线衍射仪(XRD)、扫描电子显微镜(SEM)和磁滞回线测试仪等实验测试手段,研究了Bi2O3-B2O3-SiO2(BBS)复合掺杂对MnZn铁氧体的晶体结构、显微形貌及磁性能的影响。实验结果表明,当BBS复合掺杂的质量分数从0增加到2.0%时,烧结样品的体积密度先减小后增大,w(BBS)=2.0%时样品密度达到最大值。当复合掺杂量w(BBS)>0.5%时,BBS添加剂中各组分所形成的有效液相烧结促使尖晶石颗粒粒径的逐渐增大,样品的致密度不断提高,样品的初始磁导率和饱和磁感应强度均随着掺杂量的增加而不断增大,剩余磁感应强度和矫顽力则随之不断减小;当w(BBS)=2.0%时,样品获得最佳磁性能。The crystal structure, micro-morphology and magnetic properties of MnZn ferrites with Bi2 O3-B2 03- SiO2 （BBS）compound doping were investigated by X-ray diffractometer （XRD）, scanning electron microscope（SEM） and hysteresis loop scope, respectively. The experimental results revealed that bulk density of samples decreased firstly and then increased when the BBS compound doping amounts varied from 0 to 2.0% and the maximum density was obtained when the doping amounts were 2.0%. All components contained in BBS additives formed the effective liquid sintering to promote the grain growth and the elevation of bulk density of samples when the doping amounts were more than 0.5 %. The initial permeability and saturation magnetization of samples both increased with the increment of compound doping amounts, along with the reduction of residual magnetic induction and coercive force. The optimum magnetic properties of samples were achieved when BBS doping amounts were 2.0%

关 键 词：MNZN铁氧体 溶胶-凝胶自燃烧 掺杂 磁性能 

分 类 号：TM277.1[一般工业技术—材料科学与工程] O737[电气工程—电工理论与新技术]