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<p>Pyrochlore-structured nanocrystalline materials (A<sub>2</sub>B<sub>2</sub>O<sub>7</sub>) are emerging as versatile and advanced functional materials with wide-ranging applications in energy storage, sensing, catalysis, optoelectronics, and electronic technologies. Their compositional flexibility allows tuning of structural, magnetic, thermal, dielectric, and photoluminescent properties through strategic incorporation of f- and d-block metal ions, enabling multifunctionality and tailored performance. This review highlights recent advances in the synthesis, characterization, and applications of selected pyrochlores, including titanates, zirconates, niobates, tantalates, and stannates. Gadolinium titanate (Gd<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>) exhibits strong magnetic interactions, lanthanum zirconate (La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>) demonstrates high-temperature thermal stability, and bismuth niobate (Bi<sub>2</sub>Nb<sub>2</sub>O<sub>7</sub>) shows excellent dielectric behavior. Bismuth tantalite (Bi<sub>2</sub>Ta<sub>2</sub>O<sub>7</sub>) and gadolinium stannate (Gd<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub>) provide promising photocatalytic, dielectric, and photoluminescent functionalities. Emphasis is placed on the structure-property-performance relationship and integration with other nanomaterials, highlighting future directions for practical implementation of pyrochlores in multifunctional, energy-efficient, and technologically advanced applications across energy, environmental, and electronic sectors.</p>

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Recent progress in pyrochlore-based nanocrystalline materials for energy, sensing, and electronic applications

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • A.P. Rajalakshmi,
  • Arputharaj Samson Nesaraj

摘要

Pyrochlore-structured nanocrystalline materials (A2B2O7) are emerging as versatile and advanced functional materials with wide-ranging applications in energy storage, sensing, catalysis, optoelectronics, and electronic technologies. Their compositional flexibility allows tuning of structural, magnetic, thermal, dielectric, and photoluminescent properties through strategic incorporation of f- and d-block metal ions, enabling multifunctionality and tailored performance. This review highlights recent advances in the synthesis, characterization, and applications of selected pyrochlores, including titanates, zirconates, niobates, tantalates, and stannates. Gadolinium titanate (Gd2Ti2O7) exhibits strong magnetic interactions, lanthanum zirconate (La2Zr2O7) demonstrates high-temperature thermal stability, and bismuth niobate (Bi2Nb2O7) shows excellent dielectric behavior. Bismuth tantalite (Bi2Ta2O7) and gadolinium stannate (Gd2Sn2O7) provide promising photocatalytic, dielectric, and photoluminescent functionalities. Emphasis is placed on the structure-property-performance relationship and integration with other nanomaterials, highlighting future directions for practical implementation of pyrochlores in multifunctional, energy-efficient, and technologically advanced applications across energy, environmental, and electronic sectors.