Abstract We synthesized LaCr1-xCoxO3 (x = 0, 0.01, 0.10, 0.15, 0.20, 0.30) compounds by solid-state reaction method. SEM and EDX analyses were carried out to study their structural and chemical properties. Furthermore, their electrical/dielectric properties including real and imaginary part of dielectric function, real and imaginary part of impedance, conductivity, were investigated at wide temperature (between −100 0C and 100 0C) and frequency range (1 Hz–107 Hz) by using Broadband Impedance Spectroscopy (Novocontrol). Temperature dependent power law exponent, s, showed that different conduction mechanisms need to be considered to study the conduction in the investigated samples. The calculated activation energies from the conductivity varied between 0.170 eV and 0.388 eV indicating that the oxygen vacancies and small polaron hopping conduction taken place in the samples. Moreover, the Nyquist plots demonstrated that grain and grain boundary relaxations happen in the investigated specimens.

中文翻译：

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钴 (Co) 掺杂对 LaCr1-xCoxO3 钙钛矿氧化物化合物电学和介电性能的影响

摘要 我们采用固相反应法合成了LaCr1-xCoxO3 (x = 0, 0.01, 0.10, 0.15, 0.20, 0.30)化合物。进行SEM和EDX分析以研究它们的结构和化学性质。此外，它们的电/介电特性，包括介电函数的实部和虚部、阻抗的实部和虚部、电导率，在宽温度（-100 0C 和 100 0C 之间）和频率范围（1 Hz-107 Hz）下进行了研究。使用宽带阻抗谱（Novocontrol）。温度相关的幂律指数 s 表明需要考虑不同的传导机制来研究被调查样品中的传导。由电导率计算的活化能在 0.170 eV 和 0 之间变化。388 eV 表明样品中发生氧空位和小极化子跳跃传导。此外，奈奎斯特图表明在所研究的试样中发生晶粒和晶界松弛。