High dielectric constant and low loss nanocrystalline EuTiNbO6 ceramic was synthesized through a combustion technique. Phase purity, structure and particle size were examined using X-Ray diffraction, Fourier Transform Raman, Infrared spectroscopy and transmission electron microscopic techniques. The X-Ray diffraction study reveals that the sample crystallizes in orthorhombic aeschynite structure without any impurity. The non-agglomerated particles with narrow particle size distribution were observed in the transmission electron micro graph and the average particle size was found to be 25 nm. The sample attained the 98 % of theoretical density when it was sintered at 1150 ºC. The scanning electron micrograph of the sample exhibits non uniform distribution of grains nearly in spherical shape throughout the surface. The Energy dispersive spectrum analysis confirms that the constituent elements are nearly the same atomic percentage as per the chemical formula of the sample. The dielectric properties of the sintered sample were measured in the radio frequency and micro frequency region. The dielectric constant and quality factor of the sample at room temperature are 35 and 23370, respectively. The dielectric studies revealed that the nanocrystalline EuTiNbO6 Ceramic is a promising material for dielectric resonator applications.

中文翻译：

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探索纳米晶铕钛铌酸盐作为介质谐振器

通过燃烧技术合成了高介电常数和低损耗的纳米晶 EuTiNbO6 陶瓷。使用 X 射线衍射、傅立叶变换拉曼、红外光谱和透射电子显微技术检查相纯度、结构和粒度。X 射线衍射研究表明，样品结晶为斜方菱镁矿结构，不含任何杂质。在透射电子显微图中观察到具有窄粒径分布的非团聚颗粒，发现平均粒径为25nm。样品在 1150 ºC 下烧结时达到理论密度的 98%。样品的扫描电子显微照片显示颗粒在整个表面几乎呈球形分布不均匀。能量色散谱分析证实，根据样品的化学式，组成元素的原子百分比几乎相同。在射频和微频区测量烧结样品的介电性能。样品在室温下的介电常数和品质因数分别为 35 和 23370。介电研究表明，纳米晶 EuTiNbO6 陶瓷是一种用于介电谐振器应用的有前途的材料。分别。介电研究表明，纳米晶 EuTiNbO6 陶瓷是一种用于介电谐振器应用的有前途的材料。分别。介电研究表明，纳米晶 EuTiNbO6 陶瓷是一种用于介电谐振器应用的有前途的材料。