Abstract A new Aurivillius Bi5Ti3Fe0.5Ni0.5O15 compound was prepared using the conventional ceramic technology. The features of the temperature dependences of the dielectric constant ε′ and the dielectric loss tgδ were studied in the temperature range from 300 to 750 K. These dependences indicate a significant conductivity contribution to the ε′ and tgδ as well as the presence of a relaxation process. The ac conductivity was calculated, the hodograph of the impedance of the sample was plotted, and the activation energy of the dielectric relaxation process was estimated. A comparison of the activation energy of the total electrical conductivity and electrical conductivity in the grain bulk showed that the electrical conductivity of the studied compound is mainly due to the electrical conductivity of the grains boundaries.

中文翻译：

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Aurivilius Bi5Ti3Fe0.5Ni0.5O15陶瓷的介电性能

摘要 采用常规陶瓷工艺制备了一种新的Aurivilius Bi5Ti3Fe0.5Ni0.5O15化合物。在 300 到 750 K 的温度范围内研究了介电常数 ε' 和介电损耗 tgδ 的温度依赖性特征。这些依赖性表明对 ε' 和 tgδ 的显着电导率贡献以及弛豫的存在过程。计算交流电导率，绘制样品阻抗的曲线图，并估计介电弛豫过程的激活能。总电导率的活化能和颗粒体中的电导率的比较表明，所研究化合物的电导率主要是由于晶界的电导率。