High-Temperature Dielectric Relaxation and Electric Conduction Mechanisms in a LaCoO₃-Modified Na_0.5Bi_0.5TiO₃ System.

ABSTRACT: This research study examines the high-temperature dielectric relaxation and electric conduction mechanisms in (x)LaCoO₃-(1 - x)Na_0.5Bi_0.5TiO₃ samples, where x is 0.05, 0.10, and 0.15. The findings demonstrate that all the samples exhibit two dielectric transitions: first, a frequency-dispersive shoulder at a lower temperature (T_s) around 425-450 K, which is associated with polar nanoregions (PNRs), and second, from ferroelectric to paraelectric transition at the Curie temperature (T_c) approximately between 580 and 650 K. The impedance analysis reveals the negative temperature coefficient of resistance behavior of the specimens. The broad and asymmetric relaxation peaks obtained from modulus

SUBMITTER: Singh S 

PROVIDER: S-EPMC10357530 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature