abstract
The present work explores the impact of Fe insertion on the physical properties of Ba0.95Bi0.05Ti1-xFexO3 (x = 0.025, 0.050, and 0.075) prepared via sol gel method. The resulting samples crystallize in the tetragonal structure with space group P4mm and their morphological features point out the variation of the microstructure with Fe content. In turn, the dielectric constant versus temperature plot reveals the existence of two transition phases: the first one is ferroelectric-paraelectric transition phase (TF-P) and the second one is ferroelectric orthorhombic -ferroelectric tetragonal phase (TO-T). Analysis of conductivity curves using Jonscher's augmented equation (for x = 0.025) and Jonscher's power law (for x = 0.075) suggests the Non-Overlapping Small Polaron Tunneling (NSPT) model as a conduction mechanism.
keywords
ELECTRICAL-PROPERTIES; MAGNETOELECTRIC PROPERTIES; MAGNETIC-PROPERTIES; IMPEDANCE; FERROMAGNETISM; TRANSFORMATION; CONDUCTIVITY; DEPENDENCE; FTIR; IRON
subject category
Chemistry
authors
Gouadria, H; Smari, M; Mnasri, T; Necib, J; Sánchez, JL; Marín, P; Jamale, AP; Ben Younes, R
our authors
Atul Prabhakar Jamale
Junior Researcher
Mourad Smari
Post-Doc Fellowshipacknowledgements
Hamida Gouadria acknowledges funding from the Tunisian Ministry of Higher Education and Scientific Research. Mourad Smari acknowledges the financial support from the Program Ulam NAWA (Polish National Agency for Academic Exchange) under the project BPN/ULM/2021/1/00015/U/00001. Jesus Lopez Sanchez receives funding from the Ministerio de Asuntos Economicos y Transformacion Digital (MINECO) through the project PID2020-114192RB-C41. Pilar Marin acknowledges the financial support from the Ministerio de Ciencia e Innovacion (MICINN) through the project RTI2018-095856-B-C21 and Comunidad de Madrid by S2018/NMT-4321 "NANOMAGCOST".