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无机材料学报

无机材料学报

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高Mn含量对NiZnCu铁氧体性能的影响

李勃; 齐西伟; 岳振星; 李龙土; 周济   

  1. 清华大学材料系新型陶瓷与精细工艺国家重点实验室 北京 100084
  • 收稿日期:2000-11-20 修回日期:2000-12-25 出版日期:2001-11-20 网络出版日期:2001-11-20

Effects of High Mn Component on Properties of NiCuZn Ferrite

LI Bo; QI Xi-Wei; YUE Zhen-Xing; LI Long-Tu; ZHOU Ji   

  1. State Key Lab of New Ceramics and Fine Processing; Dept. of Materials Science and Engineering; Tsinghua University; Beijing 100084; China
  • Received:2000-11-20 Revised:2000-12-25 Published:2001-11-20 Online:2001-11-20

PDF (PC)

872

被引次数

39

摘要： 研究了在（Ｎｉ０.2Ｃｕ0 .2Ｚｎ0 .６）１．０３（Ｆｅ2Ｏ３)0 ．９７＋０．９７ｘＭnO2(ｘ=０．１～０．５)中，随Ｍｎ含量的变化，磁性能的改变及与微观结构的关系．适量的Ｍｎ掺杂可以提高室温下铁氧体的起始磁导率，而Ｍｎ含量继续增加会促使第二相形成，使磁导率温度系数变大，出现类似铁电体的弛豫现象．

关键词: NiZnCu铁氧体, Mn掺杂, 起始磁导率, 弛豫现象

Abstract: MnO2 was introduced to NiCuZn ferrite. The effects of Mn substitution on the magnetic properties and microstructure of the (Ni0.2 Cu0.2 Zn0.6)1.03 (Fe2O3)0.97+0.97xMnO2 ferrite (x=0.1～0.5) were investigated. Mn content increases the initial permeability, but excess Mn content will result in the formation of a secondary phase. And the initial permeability depending on temperatures is strongly affected by Mn content too. When x≥ 0.4, the temperature coefficient of initial permeability increases quickly, which just like the relaxant phenomenon in ferroelectrics.

Key words: NiZnCu ferrite, Mn doped, initial permeability, relaxant phenomenon

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