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无机材料学报

无机材料学报

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Bi-Mo复合掺杂对MgCuZn铁氧体烧结特性和磁性能的影响

邓联文1, 冯则坤2, 黄小忠1, 周克省1, 杨兵初1   

  1. 1. 中南大学物理科学与技术学院, 长沙 410083; 2. 华中科技大学电子系, 武汉 430074
  • 收稿日期:2007-07-31 修回日期:2007-10-12 出版日期:2008-07-20 网络出版日期:2008-07-20

Effect of Bi and Mo Doping on Magnetic and Sintered Characteristics of MgCuZn Ferrite

DENG Lian-Wen1, FENG Ze-Kun2, HUANG Xiao-Zhong1, ZHOU Ke-Xing1, YANG Bing-Chu1   

  1. 1. School of Physics Science and Technology, Central South University, Changsha 410083, China; 2. Department of Electronic Science, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2007-07-31 Revised:2007-10-12 Published:2008-07-20 Online:2008-07-20

PDF (PC)

2762

被引次数

6 | 1

摘要： 为改善MgCuZn铁氧体的低温烧结特性并提高其软磁性能, 采用传统氧化物法制备MgCuZn铁氧体材料, 研究了Bi-Mo复合掺杂对其烧结特性和软磁性能的影响. 结果表明: 复合掺杂Bi2 O3和MoO3适量时(分别为0.6wt％和0.1wt％), 在较低的烧结温度(1020℃)就能获得较高的烧结密度(<4.75g/cm3), 起始磁导率可达1240, 且具有较高的品质因数(100kHz下为33.8). 通过主成分优选、有效的掺杂技术及工艺条件可以提高MgCuZn铁氧体的综合性能, 使其可应用于多层片式电感中.

关键词: MgCuZn铁氧体, Bi-Mo 复合掺杂, 低温烧结, 起始磁导率

Abstract: MgCuZn ferrites were fabricated by the traditional oxide-sintering method to explore the way to improve their sintering characteristics and soft magnetic properties. Effect of Bi and Mo co-doping on magnetic performances of MgCuZn ferrites with lower sintering temperature and high initial permeability was discussed. Results show that the density is larger than 4.75g/cm3 for the MgCoZn ferrite sintered at 1020℃with moderate quantity of Bi and Mo doping(0.6wt％ and 0.1wt％, respectively), initial permeability is as large as 1240 and quality factor is as high as 33.8 at 100kHz, respectively. Thus, MgCuZn ferrite may be used in multilayer chip inductor by appropriate constituents, doping and preparing technology.


Key words: MgCuZn ferrite, Bi-Mo co-oping, low sintering temperature, initial permeability

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