The microwave dielectric properties of BiNbO 4 –FeNbO 4 ceramics prepared by the conventional solid-state reaction method, and co-fired at low temperature, had been investigated. The structure, phase composition and surface morphology were studied by X-ray diffraction and scanning electron microscopy techniques, respectively. The dielectric properties of the prepared samples were determined at ≈2.8 GHz, using the modified resonant cavity perturbation method, which accuracy was previously studied using typical cylindrical samples of polytetrafluorethylene. The experimental dielectric constant values of the samples were then fitted to the theoretical curves of different mixture laws.

中文翻译：

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二元体系BiNbO 4 –FeNbO 4的微波介电性能

研究了通过常规固态反应方法制备并在低温下共烧的BiNbO 4 -FeNbO 4陶瓷的微波介电性能。通过X射线衍射和扫描电子显微镜技术分别研究了其结构，相组成和表面形态。使用改进的谐振腔扰动方法，在约2.8 GHz的条件下确定了制备样品的介电性能，该精度先前已使用聚四氟乙烯的典型圆柱样品进行了研究。然后将样品的实验介电常数值拟合到不同混合定律的理论曲线。