abstract
This research aims to develop a perovskite ceramic with optimized electrical and dielectric properties for applications in energy storage, medical technologies, and electronic devices. A bismuth ferric titanate compound, Bi0.9Ba0.1Fe0.8Ti0.2O(3), doped with barium at the A-site, was successfully synthesized using the sol-gel method. X-ray diffraction at room temperature confirmed a rhombohedral structure within the R3C space group. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) revealed an average grain size of 273 nm with uniform grain distribution and chemical composition. The study identified a clear correlation between temperature, frequency, and the material's electrical characteristics. Impedance spectroscopy and electrical modulus analysis, conducted over a frequency range of 1 kHz to 1 MHz and temperatures between 260 and 340 K, indicated non-Debye relaxation behavior. Additionally, the material's frequency-dependent electrical conductivity, analyzed through Jonscher's law at various temperatures, showed that barium doping significantly enhanced conductivity and dielectric properties compared to undoped BiFeTiO3. Consistent conduction and relaxation mechanisms were observed across the entire temperature range, highlighting the material's potential for use in capacitors and electric fields over a wide range of conditions.
keywords
MAGNETIC-PROPERTIES; IMPEDANCE; BIFEO3; FERROELECTRICITY; MULTIFERROICS; CONDUCTIVITY; SUBSTITUTION; RELAXATION; INSIGHTS; BEHAVIOR
subject category
Engineering; Materials Science; Physics
authors
Dhahri, R; Tayari, F; Albargi, HB; Elkenany, EB; Al-Syadi, AM; Sharma, N; Lal, M; Nassar, KI
our authors
Kais Iben Nassar
Post-Doc Fellowshipacknowledgements
Acknowledgment: The authors are thankful to the Deanship of Graduate Studies and Scientific Research at Najran University for funding this work under the Easy Funding Program grant code NU/EFP/SERC/13/41.