In this paper, magnesium-doped CoFe₂O₄ (Co_0.5Mg_0.5Fe₂O₄) compound was synthesized by a solidstate reaction route. The impact of Mg inclusion on the structural parameters of the obtained compound and the subsequent development of thermally-assisted electro-active areas has been systematically examined, as this compound has a fit composition for doping at the site of Co due to its relevantly equal atomic radius. Also, Mg was established as highly ferroelectric and low-weight material. The compound structure and microstructure have been analyzed using the method of scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. The dielectric properties were studied over a broad spectrum of frequency and temperature, and quite low dielectric loss was recorded. In the context of impedance and conductivity formalism, frequency-dependent electrical information has been evaluated at varying temperatures. The Nyquist plot represents the effect of grain and grain boundary. Thermally activated non-Debye type relaxation processes were observed in the composites. Jonscher universal power law follows the frequency-dependent AC conductivity at different temperatures. Temperature dependence of AC conductivity at various frequencies indicates a negative temperature coefficient of resistance (NTCR) behavior. Estimating the magnitudes of activation energies in different temperature ranges enables defining the nature of the species involved in the conduction system.

本文研究了掺镁的CoFe ₂ O ₄（Co _0.5 Mg _0.5 Fe ₂ O ₄通过固相反应路线合成化合物。已经系统地研究了镁的掺入对所得化合物结构参数的影响以及随后形成的热辅助电活性区域的影响，因为该化合物由于其原子相对相等而具有适合在Co位置掺杂的合适组成。半径。此外，Mg被确定为高铁电和轻质材料。使用扫描电子显微镜（SEM）和X射线衍射（XRD）分析的方法分析了化合物的结构和微观结构。在很宽的频率和温度范围内研究了介电性能，并记录了相当低的介电损耗。在阻抗和电导形式上，已经在不同温度下评估了频率相关的电信息。奈奎斯特图表示晶粒和晶粒边界的影响。在复合材料中观察到热活化的非德拜型弛豫过程。琼斯通用功率定律遵循不同温度下与频率相关的交流电导率。交流电导率在各种频率下的温度依赖性表示电阻的负温度系数（NTCR）行为。估计不同温度范围内的活化能的大小可以定义传导系统中所涉及的物质的性质。琼斯通用功率定律遵循不同温度下与频率相关的交流电导率。交流电导率在各种频率下的温度依赖性表示电阻的负温度系数（NTCR）行为。估计不同温度范围内的活化能的大小可以定义传导系统中所涉及的物质的性质。琼斯通用功率定律遵循不同温度下与频率相关的交流电导率。交流电导率在各种频率下的温度依赖性表示电阻的负温度系数（NTCR）行为。估计不同温度范围内的活化能的大小可以定义传导系统中所涉及的物质的性质。