Here, we report on the temperature and frequency dependent electrical conduction and dielectric behaviour of YCrO₃ ceramics. Dielectric studies reveal a peak in the dielectric constant ∼230 K, suggesting presence of spin-charge coupling. Also, an additional broad peak found at ∼450 K is reminiscent of a relaxor like behaviour for YCrO₃, attributed to a diffused phase transition. The nature of dc conductivity is of Arrhenius type and shows an abrupt change in the activation energy at ∼230 K and ∼450 K. The activation energy suggests that the polaronic hopping mechanism stabilizes at low temperature while, at higher temperatures, the process is associated with the diffusion of double ionized oxygen vacancies. However, ac conductivity suggests that the overlapping large polaron tunnelling conduction mechanism drives the ac conduction below 300 K and above 300 K, the conduction behaviour is consistent with the correlated barrier hopping conduction mechanism.

在这里，我们报告了与温度和频率相关的YCrO ₃陶瓷的导电性和介电性能。介电研究表明介电常数约为230 K的峰值，表明存在自旋电荷耦合。另外，在〜450 K处发现一个额外的宽峰，让人联想到YCrO _3的类似弛豫的行为，归因于扩散的相变。直流电导率的性质是Arrhenius型的，并且在〜230 K和〜450 K时显示出活化能的突然变化。活化能表明，极化子跳跃机制在低温下稳定，而在较高温度下，该过程是相关的随着双电离氧空位的扩散。然而，交流电导率表明，重叠的大极化子隧穿传导机制驱动交流电在300 K以下和300 K以上的传导，其行为与相关的势垒跳跃传导机制是一致的。