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<p>Bismuth ferrite (BiFeO<sub>3</sub>, BFO) has stood out as a potential lead-free multiferroic material simultaneously exhibiting ferroelectric and magnetic ordering at room temperature, along with diverse energy-related functionalities. However, the underlying origin of its multifunctionality remains strongly influenced by crystallographic symmetry, particularly the space group, which is often underexplored as a tunable design parameter. Also, BFO has some intrinsic challenges, such as introduction of impurity phases, high leakage current, weak magnetization arising from its long-wavelength cycloidal spin structure that hampers its practical performance. Recent studies have shown that these limitations can be effectively addressed through proper chemical doping concentration, interface engineering, thin-film growth and nano-structuring. This review highlights the progress in synthesis techniques, structure–property correlations, and multifunctional applications such as photovoltaics, photocatalysis, pyro and triboelectric. We systematically elucidate the role of space group symmetry in dictating the structural distortions, electronic configurations, and ferroic order parameters in BiFeO<sub>3</sub>, this work reveals that BFO is not just a classical multiferroic oxide, but a promising next-generation platform for sustainable energy harvesting, storage and hybrid multifunctional integrated device.</p>

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The role of space group symmetry in BiFeO3 for multifunctional energy harvesting applications

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Uday Singh,
  • Anchal Kashyap,
  • Itika Kainthla,
  • Mamta Shandilya,
  • Dimitra Vernardou,
  • Top Khac Le,
  • Sahil Kumar

摘要

Bismuth ferrite (BiFeO3, BFO) has stood out as a potential lead-free multiferroic material simultaneously exhibiting ferroelectric and magnetic ordering at room temperature, along with diverse energy-related functionalities. However, the underlying origin of its multifunctionality remains strongly influenced by crystallographic symmetry, particularly the space group, which is often underexplored as a tunable design parameter. Also, BFO has some intrinsic challenges, such as introduction of impurity phases, high leakage current, weak magnetization arising from its long-wavelength cycloidal spin structure that hampers its practical performance. Recent studies have shown that these limitations can be effectively addressed through proper chemical doping concentration, interface engineering, thin-film growth and nano-structuring. This review highlights the progress in synthesis techniques, structure–property correlations, and multifunctional applications such as photovoltaics, photocatalysis, pyro and triboelectric. We systematically elucidate the role of space group symmetry in dictating the structural distortions, electronic configurations, and ferroic order parameters in BiFeO3, this work reveals that BFO is not just a classical multiferroic oxide, but a promising next-generation platform for sustainable energy harvesting, storage and hybrid multifunctional integrated device.