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arXiv · 2112.11874

Low temperature magnetic and dielectric properties correlation in Fe-doped copper (ii) oxide ceramics for potential device application

Kumar Brajesh·Ritamay Bhunia·Shashikant Gupta·Rajeev Gupta·Ambesh Dixit·Ashish Garg
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Abstract

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 (Fe$^{3+}$) in copper (II) oxide (Cu$_{0.95}$Fe$_{0.05}$O) bulk samples on magnetic and dielectric behavior. The paramagnetic phase has been established in CuO as a result of Fe$^{3+}$ doping. The strong correlation between magnetic and dielectric properties indicated spin-polaron interaction at the transition temperature. Bulk CuO and also Cu$_{0.95}$Fe$_{0.05}$O 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 Cu$_{0.95}$Fe$_{0.05}$O would show its potential in the spintronic application for a high dielectric constant with low loss and high magnetic susceptibility.

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Kumar Brajesh, Ritamay Bhunia, Shashikant Gupta, Rajeev Gupta, Ambesh Dixit, Ashish Garg. 2021-12-22. Low temperature magnetic and dielectric properties correlation in Fe-doped copper (ii) oxide ceramics for potential device application. https://arxiv.org/abs/2112.11874

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