The rare earth element ytterbium based lead-free perovskite BiYbO₃ was successfully synthesized by cost effective solid-state reaction technique. The analysis of the XRD reflection peaks revealed that BiYbO₃ crystallizes with cubic Fm3m single phase crystal system having cell parameter a=5.377Å. The decrease in the dielectric permittivity with frequency was found to follow the accepted Maxwell–Wagner model of interfacial polarization. The reported perovskite was found to be stable up to 450°C as evident from the low tanδ values. The bulk capacitance of BiYbO₃ decreases from 1.619nF/cm² to 0.173nF/cm² with the rise in temperature from 25°C to 450°C. The dielectric data shows that BiYbO₃ perovskite follows a negative temperature coefficient of resistance (NTCR) trend. The information obtained from the Nyquist plot and the Cole–Cole electric modulus plot is complementary to each other. The effect of bulk and grain boundary is clearly visible in the Cole–Cole electric modulus plot, whereas a good fit of the equivalent circuit {(CQR)(CR)} in the Nyquist plot gave important bulk and grain boundary (capacitance and resistance) parameters. The AC-conductive study for this rare earth perovskite is used to obtain the activation energies to understand the semiconducting behavior of BiYbO₃.

中文翻译：

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稀土基钙钛矿的阻抗和电学评估：BiYbO3

采用高性价比的固相反应技术成功合成了稀土元素镱基无铅钙钛矿BiYbO _{3 。}XRD反射峰分析表明BiYbO ₃以立方晶系结晶F米3米具有晶胞参数的单相晶系一种=5.377一种。发现介电常数随频率的降低遵循公认的界面极化麦克斯韦-瓦格纳模型。发现报道的钙钛矿稳定至450°C 从低处可以看出棕褐色δ价值观。BiYbO ₃的体电容从 1.619 下降nF/cm ²至 0.173nF/cm ²随着温度的升高25°C到450°C. 介电数据表明，BiYbO ₃钙钛矿遵循负温度系数（NTCR）趋势。从 Nyquist 图和 Cole-Cole 电模量图获得的信息是互补的。体积和晶界的影响在 Cole-Cole 电模量图中清晰可见，而等效电路的良好拟合{(C问R)(CR)}在奈奎斯特图中给出了重要的体积和晶界（电容和电阻）参数。这种稀土钙钛矿的交流导电研究用于获得活化能，以了解 BiYbO ₃的半导体行为。