In this pioneering investigation, we meticulously synthesized BaSrTiO nanoparticles, with Sr concentrations varying between 0.0 and 0.4 at intervals of 0.1, via a refined chemical approach. The crux of our study lies in establishing the intricate correlations between the chemical constitution (primarily Sr concentration), salient structural attributes (encompassing lattice and microstructural parameters), electrical dynamics and consequential microwave characteristics. X-ray diffraction (XRD) analyses reinforced the unity between the average ionic radii of the Ba/Sr ions and the lattice constants. Scanning electron spectroscopy (SEM) furnished insights into the microstructural intricacies, while the nominal chemical composition was ascertained via energy-dispersive X-ray (EDX) spectroscopy. A deep dive into the electrical realm revealed the temperature and field-dependent behaviors of permittivity, tangent losses and polarization. The electromagnetic traits of BaSrTiO (where 0.0 x 0.4) were meticulously delineated by analyzing the experimentally determined S-parameters across a frequency spectrum of 6 to 18 GHz. Our findings elucidate that the predominant losses of electromagnetic wave energy are attributable to aggregated electrical losses, predominantly steered by polarization processes. Our findings demonstrate a significant attenuation in the reflected wave energy, with values spanning from − 14.3 to − 17.1 dB, highlighting the potential of these nanoparticles for cutting-edge applications in electromagnetic interference mitigation.

中文翻译：

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调制 Ba1−xSrxTiO3 纳米颗粒的微波属性：深入了解锶浓度、结构复杂性和电磁动力学

在这项开创性的研究中，我们通过精细的化学方法精心合成了 BaSrTiO 纳米颗粒，其 Sr 浓度在 0.0 至 0.4 之间变化，间隔为 0.1。我们研究的关键在于建立化学成分（主要是 Sr 浓度）、显着结构属性（包括晶格和微观结构参数）、电动力学和随之而来的微波特性之间的复杂相关性。X 射线衍射 (XRD) 分析增强了 Ba/Sr 离子的平均离子半径与晶格常数之间的一致性。扫描电子能谱 (SEM) 提供了对微观结构复杂性的深入了解，而标称化学成分则通过能量色散 X 射线 (EDX) 光谱确定。深入研究电气领域，揭示了介电常数、正切损耗和极化的温度和场相关行为。通过分析实验确定的 6 至 18 GHz 频谱范围内的 S 参数，精心描绘了 BaSrTiO（其中 0.0 x 0.4）的电磁特性。我们的研究结果阐明，电磁波能量的主要损失可归因于聚集的电损失，主要由极化过程控制。我们的研究结果表明，反射波能量显着衰减，值范围为 - 14.3 至 - 17.1 dB，凸显了这些纳米粒子在电磁干扰缓解方面的前沿应用的潜力。