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<p>The requirements of miniaturizing microwave devices have brought about vigorous developments in low-temperature co-fired ceramics (LTCC) technology, in which circumstance synthesizing ferrimagnetic materials at low sintering temperatures becomes a crucial part. In this study, Li<sub>0.43</sub>Zn<sub>0.28</sub>Ti<sub>0.14</sub>Fe<sub>2.15</sub>O<sub>4</sub> ferrites were prepared via a solid-state reaction method, with Bi<sub>2</sub>O<sub>3</sub>–CaO mixture serving as sintering aid. Based on various characterization results, it can be concluded that the introduction of Bi<sub>2</sub>O<sub>3</sub>–CaO as a sintering aid can achieve the fabrication of Li–Zn ferrites with pure spinel phases at low temperatures. Grain growth and densification were promoted with the assistance of sintering aid with an appropriate addition amount (0.5 wt%). Regarding magnetic properties, the value of saturation magnetic induction increased from 141.3 to 236.7&#xa0;mT, and value of ferromagnetic resonance linewidth decreased from 1448 to 632 Oe. Thus Bi<sub>2</sub>O<sub>3</sub>–CaO mixture proves to be an effective sintering aid, which might be applied for LTCC applications.</p>

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Enhanced structures and magnetic properties of Li0.43Zn0.28Ti0.14Fe2.15O4 ferrites co-fired with Bi2O3–CaO sintering aid at low temperatures for LTCC applications

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Xiaoyi Wang,
  • Ning Ma,
  • Ziyan Yang,
  • Hui Li,
  • Xiujuan Feng,
  • Gang Zhou,
  • Gang Chen,
  • Lei Zhao

摘要

The requirements of miniaturizing microwave devices have brought about vigorous developments in low-temperature co-fired ceramics (LTCC) technology, in which circumstance synthesizing ferrimagnetic materials at low sintering temperatures becomes a crucial part. In this study, Li0.43Zn0.28Ti0.14Fe2.15O4 ferrites were prepared via a solid-state reaction method, with Bi2O3–CaO mixture serving as sintering aid. Based on various characterization results, it can be concluded that the introduction of Bi2O3–CaO as a sintering aid can achieve the fabrication of Li–Zn ferrites with pure spinel phases at low temperatures. Grain growth and densification were promoted with the assistance of sintering aid with an appropriate addition amount (0.5 wt%). Regarding magnetic properties, the value of saturation magnetic induction increased from 141.3 to 236.7 mT, and value of ferromagnetic resonance linewidth decreased from 1448 to 632 Oe. Thus Bi2O3–CaO mixture proves to be an effective sintering aid, which might be applied for LTCC applications.