2021/12/22 by Kumar Brajesh, Ritamay Bhunia, Brajesh, Kumar +9
Materials Science · #Applied Physics (physics.app-ph) #Copper-based nanomaterials and applications #FOS: Physical sciences #J.2 #K.m #Materials Science (cond-mat.mtrl-sci)
paper · pdf · doi:10.48550/arxiv.2112.11874
openalex publication_date 2021/12/22 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
The bulk samples of CuO and Fe-doped CuO were synthesized by ceramics methods. Structural and compositional analyses were performed by using X-ray diffraction, SEM, and EDAX. Through this manuscript, we are going to report the effect of trivalent iron doping (Fe3+) in copper (II) oxide (Cu0.95Fe0.05O) bulk samples on magnetic and dielectric behavior. The paramagnetic phase has been established in CuO as a result of Fe3+ doping. The strong correlation between magnetic and dielectric properties indicated spin-polaron interaction at the transition temperature. Bulk CuO and also Cu0.95Fe0.05O exhibit the multiferroic phase in a narrow temperature range (190 K to 230 K). Two transitions happened from a paramagnetic-paraelectric phase to incommensurate or asymmetrical antiferromagnetic (AF) and ferroelectric state near highest Neel temperature (TN1) ~230 K and another second phase transition, the order of AF phase transformed to commensurate AF phase and ferroelectricity disappeared at around the Neel temperature (TN2) ~210 K in all samples. This Cu0.95Fe0.05O would show its potential in the spintronic application for a high dielectric constant with low loss and high magnetic susceptibility.