Abstract Ni0.4Zn0.6Fe2O4/Pb(Zr0.53Ti0.47)O3 (NZFO/PZT), BaFe12O19/Pb(Zr0.53Ti0.47)O3 (BaM/PZT) and BaFe12O19/Ba0.6Sr0.4TiO3 (BaM/BST) composite ceramics were fabricated by a conventional sintering method. Their magnetic and electrical properties are compared in detail at microwave frequency, including the effect of magnetic field and polarization. In the high frequency of 2–10 GHz, the permeability and permittivity of BaM/PZT and BaM/BST composites enjoy good stability under DC magnetic field. The permeability of NZFO/PZT composites shows a loss peak due to the domain wall resonance under magnetic field, which moves to high frequency with the increase in magnetic field. For polarized BaM/PZT and NZFO/PZT composites, the loss peak of permeability shifts to low frequency and the loss peak of permittivity becomes broadened. These clearly indicate the coupling between magnetic and ferroelectric phases at microwave frequency. The results are helpful for material selection in the design of microwave devices.

中文翻译：

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一些磁介电复合材料在微波频率下的电学和磁学特性

摘要 Ni0.4Zn0.6Fe2O4/Pb(Zr0.53Ti0.47)O3 (NZFO/PZT)、BaFe12O19/Pb(Zr0.53Ti0.47)O3 (BaM/PZT) 和 BaFe12O19/Ba0.6Sr0.4BST (BaM/PZT) ) 复合陶瓷是通过传统的烧结方法制造的。在微波频率下详细比较了它们的磁和电特性，包括磁场和极化的影响。在 2-10 GHz 的高频下，BaM/PZT 和 BaM/BST 复合材料的磁导率和介电常数在直流磁场下具有良好的稳定性。由于磁畴壁共振，NZFO/PZT复合材料的磁导率出现损耗峰值，随着磁场的增加向高频移动。对于极化的 BaM/PZT 和 NZFO/PZT 复合材料，磁导率的损失峰向低频移动，介电常数的损失峰变宽。这些清楚地表明了微波频率下磁相和铁电相之间的耦合。研究结果有助于微波器件设计中的材料选择。