固相法与SGC法制备Zn掺杂Co2Z型铁氧体的磁性能对比研究

赵俊濠; 李维; 李启凡; 王孟奇

doi:10.19554/j.cnki.1001-3563.2025.17.033

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包装工程（技术栏目） ›› 2025, Vol. 46 ›› Issue (17) : 314-322. DOI: 10.19554/j.cnki.1001-3563.2025.17.033

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固相法与SGC法制备Zn掺杂Co₂Z型铁氧体的磁性能对比研究

赵俊濠^1a,1b, 李维^1b,2,*, 李启凡^2,3, 王孟奇^1b,2

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Comparison of Magnetic Properties of Zn-doped Z-type Ferrite Prepared by Solid State and SGC Methods

ZHAO Junhao^1a,1b, LI Wei^1b,2,*, LI Qifan^2,3, WANG Mengqi^1b,2

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摘要

目的通过使用不同的制备方法,提升Co₂Z型铁氧体的磁导率,并探究其自然共振峰随Zn含量变化的一般规律及影响因素。方法分别通过固相法和SGC法在相近的工艺条件下制备Zn掺杂Co₂Z型铁氧体以进行晶粒形貌、物相成分、静磁性能和磁导率的系统对比。结果 SGC法在1 240 °C下仅煅烧5 h合成的Zn掺杂Co₂Z型铁氧体为纯Z相,且μ''峰值于2.1 GHz附近达到1.27,相比同温度配方下煅烧10 h的固相法铁氧体提升了约72%。固相法随Zn含量变化共振峰变化剧烈且不连续,SGC法则基本为连续缓和的变化。结论使用SGC法代替固相法能制备更纯的Co₂Z相,在更短的烧结时间下显著提升目标频段下铁氧体的磁性能。两者共振峰随Zn含量变化的差异主要是W相的含量不同导致,易磁化方向的变化和W相的影响使固相法在不同Zn含量下产生共振峰的不连续性变化。

Abstract

The work aims to improve the magnetic permeability of Co₂Z-type ferrites by different fabrication methods and explore the general law and affecting factors of their natural resonance peaks changing with Zn content. Zn-doped Co₂Z-type ferrites were prepared via solid state method and SGC method respectively under similar process conditions. The samples were systematically compared in terms of grain morphology, phase composition, static magnetic properties, and permeability. The ferrites synthesized by SGC method, calcined at 1 240  °C for only 5  hours, exhibited a pure Z phase and achieved a maximum imaginary permeability of 1.27 near 2.1  GHz—approximately 72% higher than that of the solid state counterpart calcined at the same temperature for 10  hours. Furthermore, when the resonance peaks of the solid state samples exhibited abrupt and discontinuous shifts with varying Zn content, those of the SGC samples changed in a smoother and more continuous manner. This study demonstrates that replacing the solid state method with the SGC method yields purer Co₂Z phases and significantly enhances the magnetic properties in the target frequency band within shorter sintering time. The divergence in the resonance peak variations between the two methods is primarily attributed to differences in the amount of W-phase present. The variation in the easy magnetization direction and the effect of the W-phase contribute to discontinuous variations in the resonance peaks observed in solid state samples.

导出引用

赵俊濠, 李维, 李启凡, 王孟奇. 固相法与SGC法制备Zn掺杂Co₂Z型铁氧体的磁性能对比研究[J]. 包装工程（技术栏目）. 2025, 46(17): 314-322 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.033

ZHAO Junhao, LI Wei, LI Qifan, WANG Mengqi. Comparison of Magnetic Properties of Zn-doped Z-type Ferrite Prepared by Solid State and SGC Methods[J]. Packaging Engineering. 2025, 46(17): 314-322 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.033

中图分类号： TB332

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