论文部分内容阅读
低温烧结软磁铁氧体是表面组装元件(SMD)中的一类关键材料。本文对Bi掺杂的低温烧结Ni-Zn-Cu铁氧体从烧结性质、结构与相组成、显微形貌、磁结构和磁性质(磁导率、品质因数及频谱)方面进行了研究,在此基础上分析了Bi掺杂对材料形成过程和磁化机制的影响,发现Bi对材料磁性能的改进所起的作用主要产生于它对材料显微结构(晶粒、晶界和气孔)的调制。
Low-temperature sintered soft ferrite is a type of key component in surface mount components (SMDs). In this paper, the Bi-doped low-temperature sintered Ni-Zn-Cu ferrite has been studied in terms of sinter properties, structure and phase composition, microstructure, magnetic structure and magnetic properties (permeability, quality factor and frequency spectrum) On this basis, the influence of Bi doping on the material formation process and magnetization mechanism was analyzed. It is found that the effect of Bi on the improvement of the magnetic properties of the material is mainly due to its effect on the material microstructure (grain, grain boundary and porosity) modulation.