resumo
The goal of this research is to create a perovskite ceramic with electrical and dielectric properties appropriate for energy storage, medical uses, and electronic devices. A bismuth ferric titanate, Bi0.7Ba0.3(FeTi)(0.5)O-3, doped with barium and crystalline, was effectively synthesized at the A-site via sol-gel synthesis. A rhombohedral structure emerged in the R3C space group, which was confirmed by room-temperature X-ray studies. An average grain size of 263 nm and a homogeneous grain distribution and chemical composition were confirmed by the results of scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). The study established a clear relationship between temperature, frequency, and the electrical properties of the material. Impedance spectroscopy and electrical modulus measurements, performed in the frequency range of 1 kHz to 1 MHz and at temperatures ranging from 200 K to 360 K, demonstrated a non-Debye type of relaxation. Furthermore, once the material was produced at various temperatures, its frequency-dependent electrical conductivity was examined using Jonscher's law. The results demonstrate that barium doping significantly improves the electrical conductivity and dielectric properties compared to pure BiFeTiO. Over the complete temperature range, consistent conduction and relaxation mechanisms were discovered. These findings suggest that the chemical may find widespread applicability across a broad temperature range, including electrical fields and capacitors.
palavras-chave
PIEZOELECTRIC PROPERTIES; IMPEDANCE SPECTROSCOPY; MAGNETIC-PROPERTIES; CONDUCTIVITY; TEMPERATURE; FERROELECTRICITY; RELAXATION; BEHAVIOR; ZR
categoria
Materials Science
autores
Tayari, F; Teixeira, SS; Graca, MPF; Essid, M; Nassar, KI
nossos autores
Kais Iben Nassar
Bolseiro de pós-Doutoramentoagradecimentos
The authors extend their appreciation to the Deanship of Research and Graduate Studies at King Khalid University for funding this work through a Large Research Project under grant number RGP2/201/45.