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<p>This study demonstrated that magnetic properties of the LiZnTi ferrite can be enhanced by precisely controlling the dosage of Nb<sub>2</sub>O<sub>5</sub> and Bi<sub>2</sub>O<sub>3</sub> additives. XRD results indicated that the ferrite possessed a spinel structure. Furthermore, SEM revealed that the synergistic effect of Nb<sub>2</sub>O<sub>5</sub> and Bi<sub>2</sub>O<sub>3</sub> not only effectively suppressed the growth of big grains but also promoted the densification of the LiZnTi ferrite. Moreover, the magnetic performance was further enhanced when doped with 0.40 wt.% Nb<sub>2</sub>O<sub>5</sub> and 1.50 wt.% Bi<sub>2</sub>O<sub>3</sub>. Specifically, the ferromagnetic resonance linewidth (<i>ΔH</i>) decreased to 220 Oe and the saturation magnetization (4π<i>M</i><sub><i>s</i></sub>) of LiZnTi ferrite increased to 2619 Gs. The improvements of magnetic performance indicated that Nb<sub>2</sub>O<sub>5</sub> and Bi<sub>2</sub>O<sub>3</sub> are promising composite additives for the preparation of low-loss ferrite materials for microwave devices.</p>

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Microstructure and gyromagnetic properties of low-temperature sintered LiZnTi ferrites with Nb2O5-Bi2O3 composite additives

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • Long Yao,
  • Fang Xu,
  • Hongwei Yang,
  • Yong Ren,
  • Guixiang Liu,
  • Bo Dai

摘要

This study demonstrated that magnetic properties of the LiZnTi ferrite can be enhanced by precisely controlling the dosage of Nb2O5 and Bi2O3 additives. XRD results indicated that the ferrite possessed a spinel structure. Furthermore, SEM revealed that the synergistic effect of Nb2O5 and Bi2O3 not only effectively suppressed the growth of big grains but also promoted the densification of the LiZnTi ferrite. Moreover, the magnetic performance was further enhanced when doped with 0.40 wt.% Nb2O5 and 1.50 wt.% Bi2O3. Specifically, the ferromagnetic resonance linewidth (ΔH) decreased to 220 Oe and the saturation magnetization (4πMs) of LiZnTi ferrite increased to 2619 Gs. The improvements of magnetic performance indicated that Nb2O5 and Bi2O3 are promising composite additives for the preparation of low-loss ferrite materials for microwave devices.