收稿日期:2022-12-05基金项目:国家自然科学基金(U1809216)通信作者:颜冲,教授,博士,主要从事电子材料、磁性材料及器件的研究。E-mail:13A0505069@cjlu.edu.cn电子元件与材料ElectronicComponentsandMaterials第42卷Vol.42第6期No.66月Jun2023年2023ZrO2-Nb2O5复合添加对MnZn铁氧体结构和磁性能的影响王钰琪,雷国莉,颜冲(中国计量大学材料与化学学院,浙江杭州310018)摘要:针对开关电源高频小型化需求,采用固相反应制备分子式为(Mn0.766Zn0.105Fe0.129)Fe2O4的MnZn铁氧体材料,通过对铁氧体微结构的表征及磁性能的测试,研究了ZrO2和Nb2O5复合添加对MnZn铁氧体显微结构、烧结密度d、初始磁导率μi、饱和磁通密度Bs、剩余磁通密度Br、矫顽力Hc以及功耗Pcv特性的影响。结果表明,ZrO2和Nb2O5复合添加有利于促进晶粒均匀化和致密化,从而提高了材料烧结密度,能显著降低材料的剩余磁通密度和矫顽力,实现材料的高起始磁导率以及高频低损耗。当ZrO2和Nb2O5复合添加质量比为4∶6时,MnZn铁氧体的μi达到最大值(931),且在高频激励下材料的功率损耗达到最低133kW/m3(100℃,1000kHz,50mT)。关键词:MnZn铁氧体;ZrO2-Nb2O5复合添加;微结构;起始磁导率;高频功率损耗中图分类号:TM277文献标识码:ADOI:10.14106/j.cnki.1001-2028.2023.1728引用格式:王钰琪,雷国莉,颜冲.ZrO2-Nb2O5复合添加对MnZn铁氧体结构和磁性能的影响[J].电子元件与材料,2023,42(6):687-692.Referenceformat:WANGYuqi,LEIGuoli,YANChong.EffectofZrO2andNb2O5co-dopingonthestructureandmagneticpropertiesofMnZn-ferritesforhigh-frequencyapplication[J].ElectronicComponentsandMaterials,2023,42(6):687-692.EffectofZrO2andNb2O5co-dopingonthestructureandmagneticpropertiesofMnZnferritesforhigh-frequencyapplicationWANGYuqi,LEIGuoli,YANChong(CollegeofMaterialsandChemistry,ChinaJiliangUniversity,Hangzhou310018,China)Abstract:Aimingattheminiaturizationoftheswitchingpowersupplyforhigh-frequencyapplications,MnZnferritematerialswiththemolecularformulaof(Mn0.766Zn0.105Fe0.129)Fe2O4werepreparedbytheconventionalsolid-phasereactionmethod.Theeffectsofco-dopingZrO2-Nb2O5onthemicrostructuresinteringdensityd,initialpermeabilityμi,saturationmagneticfluxdensityBs,residualmagneticfluxdensityBr,coercivityHcandpowerlossPcvofMnZnferriteswereinvestigated.The...
