In this article, the structural, micro-structural, and temperature-frequency dependence of electrical characteristics of double perovskite (BaSr)FeMoO₆ have been reported. The compound crystalizes in cubic symmetry with lattice parameter a = 7.9280 (2) Å, and V = 245.95 (Å)³. The micro-structural study suggests the uniform distribution of grains on its surface with small voids. The obtained high dielectric constant and low tangent loss value may be applicable for capacitor. In the impedance analysis we observed the behaviour of negative as well as positive temperature co-efficient of resistance. The study of the Nyquist plot suggests the existence of only grain effect. Based on both impedance and modulus spectroscopy, dielectric relaxation process is found to be of a non-Debye type. The frequency dependence of conductivity obeys the Jonscher's Power law which suggests the conduction phenomenon follows the non-overlaping small polaron tunnelling and correlated barrier hopping models. The calculated activation energy in the conduction process may be used in electron hoping. The comparative study of Zʹʹ and Mʹʹ with frequency suggests the existence of short range ordering of charge carriers. The leakage current study reveals that the conduction mechanism follows the space charge limited conduction phenomenon.

在本文中，已经报道了双钙钛矿（BaSr）FeMoO ₆的电学特性的结构，微观结构和温度-频率依赖性。该化合物以立方对称结晶，晶格参数为a = 7.9280（2）Å，V = 245.95（Å）³。微观结构研究表明，晶粒在其表面上的分布均匀，空隙很小。所获得的高介电常数和低切线损耗值可适用于电容器。在阻抗分析中，我们观察到电阻的正负温度系数行为。对奈奎斯特图的研究表明仅存在晶粒效应。基于阻抗和模量光谱，发现介电弛豫过程是非德拜类型的。电导率的频率依赖性遵循Jonscher幂定律，该定律表明传导现象遵循非重叠小极化子隧穿和相关的势垒跳跃模型。在传导过程中计算出的活化能可以用于电子跳跃。Zʹʹ和Mʹʹ随频率的比较研究表明，载流子存在短程有序。泄漏电流研究表明，其传导机理遵循空间电荷受限的传导现象。