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<p>The Bismuth Ferrite samples with the nominal composition BiFe<sub>0.95</sub>Cr<sub>0.05-x</sub>Pr<sub>x</sub>O<sub>3</sub> (x = 0.00, 0.01, 0.02, 0.03) were synthesized using a nitrate-based sol–gel method. The X-ray diffraction results confirm the formation of rhombohedral phase (R3c space group) without presence of impurity phases till x = 0.02. Scanning electron microscopy showed feature of grain growth, which is consistent with the decrease in microstrain computed using Williamson-Hall analysis. The dielectric measurements reveal the reduction of grain boundary resistance and increased magnetodielectric coupling for the x = 0.02 sample. The most striking magnetic enhancement is seen in the remanent magnetization, which rises from just 0.1769&#xa0;emu&#xa0;g<sup>−1</sup> in the Cr-only sample (x = 0.00) to 3.9015&#xa0;emu&#xa0;g<sup>−1</sup> at x = 0.02. On the ferroelectric side, the remanent polarization jumps from 0.7187&#xa0;µC&#xa0;cm<sup>−2</sup> for x = 0.00 to 6.4007&#xa0;µC&#xa0;cm<sup>−2</sup> at x = 0.02. The ME Coupling and Photoluminance results reveal that the Cr–Pr co-doping up to x = 0.02 has pronounced effect on the multiferroic properties of BiFeO<sub>3</sub> to suggest its use in nano-devices where strong magnetoelectric coupling is desired.</p>

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Impact of Cr–Pr co-doping on structural changes and improvement of multiferroic properties in Bismuth Ferrite

  • 期刊论文

  • 发表日期：

    2025年7月10日

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  • P. V. Kanjariya,
  • J. A. Bhalodia,
  • G. D. Jadav

摘要

The Bismuth Ferrite samples with the nominal composition BiFe0.95Cr0.05-xPrxO3 (x = 0.00, 0.01, 0.02, 0.03) were synthesized using a nitrate-based sol–gel method. The X-ray diffraction results confirm the formation of rhombohedral phase (R3c space group) without presence of impurity phases till x = 0.02. Scanning electron microscopy showed feature of grain growth, which is consistent with the decrease in microstrain computed using Williamson-Hall analysis. The dielectric measurements reveal the reduction of grain boundary resistance and increased magnetodielectric coupling for the x = 0.02 sample. The most striking magnetic enhancement is seen in the remanent magnetization, which rises from just 0.1769 emu g−1 in the Cr-only sample (x = 0.00) to 3.9015 emu g−1 at x = 0.02. On the ferroelectric side, the remanent polarization jumps from 0.7187 µC cm−2 for x = 0.00 to 6.4007 µC cm−2 at x = 0.02. The ME Coupling and Photoluminance results reveal that the Cr–Pr co-doping up to x = 0.02 has pronounced effect on the multiferroic properties of BiFeO3 to suggest its use in nano-devices where strong magnetoelectric coupling is desired.