摘要
利用溶胶 -凝胶自燃烧法合成了一系列低温烧结 Mn掺杂 Mg- Cu- Zn铁氧体 (Mg0 .2 Cu0 .2 Zn0 .6 O) (Fe2 - xMnx O3) 0 .97(x=0 ,0 .0 1,0 .0 3,0 .0 5 ,0 .0 7)。该文对低温烧结 Mn掺杂 Mg- Cu- Zn铁氧体的成相 ,致密化过程及锰含量对其磁性能和显微结构的影响进行了研究。研究发现 ,具有较低磁致伸缩系数的 Mg- Cu- Zn铁氧体呈现出比Ni- Cu- Zn铁氧体更好的磁性能。因此 ,低温烧结的 Mg- Cu- Zn铁氧体有望替代 Ni- Cu- Zn铁氧体而用作多层片式电感材料。在一定 Mn掺杂范围内 ,Mn掺杂对 Mg- Cu- Zn铁氧体磁性能的改进 ,主要是通过其对材料内部磁致伸缩系数和内应力的调控来实现的 ,而不是通过对微观结构的影响而获得的。
A series of lowtemperature sintered Mn substituted MgCuZn ferrites, (Mg02Cu02Zn06O)(Fe2-xMnxO3)097, were synthesized by SolGel autocombustion method In this paper, Mn doped lowtemperature sintered MgCuZn ferrites were studied from phase formation, densification process and influence of Mn content on magnetic properties and microstructure It is found that lowtemperature sintered MgCuZn ferrite has the higher magnetic properties than that of lowtemperature sintered NiCuZn ferrite due to lower magnetostriction of MgCuZn ferrite Therefore, MgCuZn ferrite was the most potential candidate material substitution of NiCuZn ferrite used in multilayer chip inductors Within a limited Mn substitution, the improvement of magnetic properties for MgCuZn ferrite was realized by tuning the magnetostriction and inner stress, not by modifying the microstructure
出处
《压电与声光》
CSCD
北大核心
2003年第3期233-236,共4页
Piezoelectrics & Acoustooptics
基金
国家高技术研究发展计划基金资助项目(2001AA325020)
