Abstract NiCuZn ferrites with high permeability and low magnetic loss have great application potential in high-frequency electronics. In this study, the excellent magnetic properties of (Ni0.2Cu0.2Zn0.6O)1.03(Fe2O3)0.97 ferrites are explored by doping low-melting point V2O5. The results demonstrate that the introduction of V2O5 can promote grain growth, reduce pores between grains, and obtain a denser microstructure of NiCuZn ferrites. NiCuZn ferrites with high permeability (μ’≈693.2), high saturation magnetic flux density (Bs = 325.1 mT), high remanence (Br = 174.3 mT), high Q value (~47.60), and low coercivity (Hc = 69.06 A/m) are obtained when the samples are sintered at 900 °C. However, when excessive V2O5 is added, the presence of the non-magnetic V2O5 liquid phase weakens the magnetic properties and deteriorates the grain uniformity. A dense and uniform NiCuZn ferrite sample with excellent magnetic properties can be obtained by doping 0.50 wt% V2O5. The results indicate that V2O5 can be a good candidate for low-temperature sintering.

中文翻译：

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具有均匀晶粒和增强磁性能的 V2O5 掺杂和低烧结 NiCuZn 铁氧体的合成

摘要 NiCuZn铁氧体具有高导磁率、低磁损的特性，在高频电子领域具有巨大的应用潜力。本研究通过掺杂低熔点 V2O5 来探索 (Ni0.2Cu0.2Zn0.6O)1.03(Fe2O3)0.97 铁氧体的优异磁性能。结果表明，V2O5 的引入可以促进晶粒长大，减少晶粒间的孔隙，并获得更致密的 NiCuZn 铁氧体微观结构。NiCuZn 铁氧体具有高磁导率 (μ'≈693.2)、高饱和磁通密度 (Bs = 325.1 mT)、高剩磁 (Br = 174.3 mT)、高 Q 值 (~47.60) 和低矫顽力 (Hc = 69.06 A/ m) 是样品在 900 °C 下烧结时获得的。然而，当加入过量的 V2O5 时，非磁性 V2O5 液相的存在会削弱磁性并降低晶粒均匀性。通过掺杂 0.50 wt% V2O5 可以获得致密均匀的具有优异磁性能的 NiCuZn 铁氧体样品。结果表明，V2O5 是低温烧结的良好候选材料。