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添加钛和锡对锰锌铁氧体微结构和高频性能的影响
作者:孙科 兰中文 陈代中 李乐中 陈昱 余忠  
单位:电子科技大学微电子与固体电子学院 电子科技大学微电子与固体电子学院 电子科技大学微电子与固体电子学院 电子科技大学微电子与固体电子学院 电子科技大学微电子与固体电子学院 电子科技大学微电子与固体电子学院 成都610054 成都610054 成都610054 成都610054 成都610054 成都610054 
关键词:锰锌铁氧体  添加剂  微结构  起始磁导率  电阻率  高频功率损耗 
分类号:TM277
出版年,卷(期):页码:2006,34(7):818-822
DOI:
摘要:
用氧化物陶瓷工艺制备了MnZn功率铁氧体。结合材料微观结构分析,研究了TiO2,SnO2添加剂对MnZn功率铁氧体起始磁导率μi,电阻率ρ及单位体积高频损耗Pcv的影响。结果表明:为得到优良的高频性能,TiO2和SnO2适宜添加的质量分数(下同)分别是0.2%和0.1%,而复合添加时最佳量分别为0.4%和0.1%。
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An oxide ceramic process was adopted to prepare high frequency MnZn power ferrite. In combination with the micro- structure analysis of the material, the effect of TiO2, SnO2 additives on the initial permeability (μ i ), resistivity (ρ), high frequency power loss in unit volume (Pcv) of MnZn power ferrite was investigated. The results show that in order to obtain good high frequency properties, the preferable amounts of additives in mass fraction (same below) of TiO2 and SnO2 are 0.2% and 0.1%, respectively. And if they are added together, the optimal amounts are 0.4%, and 0.1%.
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基金项目:
国防科技预研(41312040509)资助项目
作者简介:
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参考文献:
[1]LIN I N,MISHRA R,THOMAS G.CaO segregation in MnZn fer-rite[J].IEEE Trans Magn,1982,18(6):1544–1546. [2]NIE Jianhua,LI Haihua,FENG Zekun,et al.The effect of nano-SiO2on the magnetic properties of the low power loss manganese-zinc fer-rites[J].J Magn Magn Mater,2003,265:172–175. [3]CHEN S H,CHANG S C,TSAY C Y,et al.Improvement on magnetic power loss of MnZn ferrite materials by V2O5and Nb2O5co-doping[J].J Eur Ceram Soc,2001,21(10–11):1931–1935. [4]ANDREI P,CALTUN O F,PAPUSOI C,et al.Losses and magnetic properities of Bi2O3doped MnZn ferrites[J].J Magn Magn Mater,1999,196–197:362–364. [5]ZNIDARSIC A,LIMPEL M,DROFENIK M.Effect of dopants on the magnetic properties of MnZn ferrites for high frequency power sup-plies[J].IEEE Trans Magn,1995,31(2):950–953. [6]LIN Yingchun,GAN Dershin,SHEN Pouyan.Microstructure of zirco-nia–(MnZn ferrite)composites[J].Mater Sci Eng,1994,A188:327–334. [7]SINGH A K,THAKUR O P,PRAKASH C,et al.High performance Ni-substituted MnZn ferrites processes by soft chemical technique[A].In:IEEE International Magnetics Conference[C],Boston,America,2003.HC–08. [8]MORINEAU R,PAULUS M.Chart of pO2versus temperature and oxidation degree for Mn–Zn ferrites in the composition range:50
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