Abstract This paper presents the dielectric and electrical behavior of (Ba 1-x Ca x )(Fe 1/2 Nb 1/2 )O 3 (x = 0.0, 0.2, 0.6, 1.0) solid solutions. The dielectric and electrical properties were investigated with respect to variation in temperature (25–250 °C) and frequency (10–970 kHz) using impedance analyzer. This study suggests that the relative permittivity increased with increase in Ca content up to x = 0.2 and then decreased for higher Ca concentration. Dielectric anomaly observed in Ɛ r -T plots is frequency dependent which indicates that the relaxation in the system is due to electrons trapped in oxygen vacancies The occurrence of maxima of Z" and M" at different frequencies indicate the presence of Non Debye type relaxation in the studied materials. The purposed materials are potential candidate for multilayer capacitor applications.

中文翻译：

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频率和温度对钙代铌酸钡铁介电性能的影响

摘要 本文介绍了 (Ba 1-x Ca x )(Fe 1/2 Nb 1/2 )O 3 (x = 0.0, 0.2, 0.6, 1.0) 固溶体的介电和电学行为。使用阻抗分析仪在温度 (25–250 °C) 和频率 (10–970 kHz) 的变化方面研究介电和电性能。该研究表明，相对介电常数随着 Ca 含量的增加而增加，直到 x = 0.2，然后随着 Ca 浓度的升高而降低。在 Ɛ r -T 图中观察到的介电异常与频率有关，这表明系统中的弛豫是由于电子被困在氧空位中引起的。 Z" 和 M" 在不同频率下的最大值表明存在非德拜型弛豫所研究的材料。