Abstract
This paper investigates the structural, morphological, magnetic, and electrical characteristics of sol–gel auto-combustion synthesized Bi1−xCaxFe2O3 (x = 0.00, 0.05, 0.1, 0.15, 0.2, and 0.25) multiferroics. Characterization of the synthesized samples was conducted using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), vibrating sample magnetometer (VSM), and electrical properties by Impedance Analyser. The materials exhibit a rhombohedral structure within the R3c space group. FESEM experiments revealed the nanocrystalline nature of the prepared materials. The FTIR spectra display Fe–O bond vibrations at approximately 450–465 and 560–582 cm−1. Magnetic measurements indicate an enhancement in saturation magnetization for doped samples, with Ca-doped BFO nanoparticles showing a saturation magnetization ranging from 1.45 emu/g to 2.49 emu/g at a 20kOe applied magnetic field. The observed increase in the diameters of the semicircles and their higher frequency shifting in the cole-cole plot across the 10 Hz–1 MHz frequency range suggests a rise in granularity and its limits.
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Funding
The author, K. M. Batoo, would like to thank Researchers Supporting Project no. (RSP2023R148), at King Saud University, Riyadh, Saudi Arabia, for financial support.
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All authors contributed to the study's conception and design. G. M. Sravani, N. Murali, B. Chandra Sekhar, P. S. V. Shanmukhi, D. Kothandan, Tulu Wegayehu Mammo, D. Parajuli, Khalid Mujasam Batoo, Sajjad Hussain, K. Samatha performed material preparation, data collection and analysis. N. Murali wrote the first draft of the manuscript, and all authors commented on previous versions. All authors read and approved the final manuscript.
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Sravani, G.M., Murali, N., Sekhar, B.C. et al. Improved magnetic and electrical properties of Bi1−xCaxFeO3 multiferroic nanomaterials. J Mater Sci: Mater Electron 35, 539 (2024). https://doi.org/10.1007/s10854-024-12300-5
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DOI: https://doi.org/10.1007/s10854-024-12300-5