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<p>Dysprosium manganite (DyMnO₃), a multiferroic perovskite oxide, was synthesized from a combination of high-energy ball milling and thermal annealing. The final product is orthorhombic with a Pbnm symmetry, confirmed by X-ray diffraction. Field Emission Scanning Electron Microscopy (FESEM) revealed agglomerated fine grains that were ordered, with grains in the nanometer range. UV–Vis spectroscopy demonstrated a direct optical band gap of ~ 1.8&#xa0;eV for Dysprosium manganite for use in optoelectronic/photocatalytic applications. At room temperature, magnetic hysteresis (M ~ H) measurements indicate weak magnetic characteristics indicative of paramagnetic characteristics. The P ~ E loop indicated a saturated hysteresis loop typical of ferroelectrics. Dielectric analysis indicated moderate dielectric constant and low-loss tangent values. The combined assessment of structural integrity, optical response, and ferroelectric characteristics strongly suggests that DyMnO₃ synthesized through ball milling is an excellent candidate for the development of multifunctional and integrated materials for applications such as spintronics, magnetoelectric sensors, and energy storage.</p>

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High-energy ball milling-assisted synthesis of DyMnO₃: a study of its structural, dielectric and optical properties

  • 期刊论文

  • 发表日期：

    2026年3月23日

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  • S. Parthasarathy,
  • S. Behera,
  • S. Mohanty,
  • Arpita Patro

摘要

Dysprosium manganite (DyMnO₃), a multiferroic perovskite oxide, was synthesized from a combination of high-energy ball milling and thermal annealing. The final product is orthorhombic with a Pbnm symmetry, confirmed by X-ray diffraction. Field Emission Scanning Electron Microscopy (FESEM) revealed agglomerated fine grains that were ordered, with grains in the nanometer range. UV–Vis spectroscopy demonstrated a direct optical band gap of ~ 1.8 eV for Dysprosium manganite for use in optoelectronic/photocatalytic applications. At room temperature, magnetic hysteresis (M ~ H) measurements indicate weak magnetic characteristics indicative of paramagnetic characteristics. The P ~ E loop indicated a saturated hysteresis loop typical of ferroelectrics. Dielectric analysis indicated moderate dielectric constant and low-loss tangent values. The combined assessment of structural integrity, optical response, and ferroelectric characteristics strongly suggests that DyMnO₃ synthesized through ball milling is an excellent candidate for the development of multifunctional and integrated materials for applications such as spintronics, magnetoelectric sensors, and energy storage.