In3+取代对NiZn微波多晶铁氧体材料电磁性能的影响
Effect of substitutions of In3+ions on the electromagnetic properties of NiZn microwave polycrystalline ferrite materials
冯涛 1袁红兰 1陈戈 1杨菲 1胡家旭1
作者信息
- 1. 中国电子科技集团公司第九研究所,四川 绵阳 621000
- 折叠
摘要
采用普通陶瓷工艺制备微波多晶尖晶石NiZnIn铁氧体材料,研究了In3+取代对材料微观结构、电磁性能的影响.结果表明,当In3+取代量x在0～0.2范围时,材料的饱和磁化强度4πMs变化很小,气孔率p略有降低,铁磁共振线宽ΔH以各向异性致宽ΔHa为主;当x＞0.2后,材料的饱和磁化强度4πMs明显降低,气孔率p增大,铁磁共振线宽ΔH以气孔致宽ΔHp为主.In3+取代NiZn铁氧体使材料的铁磁共振线宽ΔH明显降低,介电损耗角正切tanδε降低至0.5×10-4以下,居里温度近似线性下降.In3+取代NiZn铁氧体烧结温度范围宽,在1200～1240℃温度下烧结,材料的4πMs、ΔH、tanδε变化均较小,工艺实现容易.
Abstract
Microwave polycrystalline spinel NiZn ferrite materials were prepared by common ceramic process.The effects of substitutions of In3+ions on the microstructure and electromagnetic properties of NiZn ferrite materials were studied.The results show that when the substitution amount x of In3+ion is in the range of 0-0.2,the saturation magnetization of the material changes very little at 4πMs,the porosity p slightly decreases,and the ferromagnetic resonance linewidth of the material ΔH-broadening with anisotropy ΔHa is the main factor;When x>0.2,the saturation magnetization of the material decreases significantly by 4πMs,the porosity p increases,and the ferromagnetic resonance linewidth of the material increases ΔH widens with pores ΔHp is the main focus.Replacing NiZn ferrite with In3+enhances the ferromagnetic resonance linewidth of the material ΔH significantly decreases,and the dielectric loss angle tangent tanδε reduce to 0.5×10-4,the Curie temperature approximately decreases linearly.The sintering temperature range of In3+substituted NiZn ferrite is wide,and sintering at temperatures ranging from 1200 to 1240℃,results in 4πMs,ΔH and tanδε changes are relatively small,and the process implementation is easy.
关键词
微波多晶尖晶石铁氧体材料/In3+取代/饱和磁化强度/铁磁共振线宽/介电损耗/居里温度Key words
microwave polycrystalline spinel ferrite material/substitutions of In3+ions/saturation magnetization/ferromagnetic resonance linewidth/dielectric loss/Curie temperature引用本文复制引用
出版年
2024
NETL
NSTL
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