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<p>In this study, pure and Co-doped lead tungstate (PbWO₄) and calcium tungstate (CaWO₄) nanomaterials were synthesized using the coprecipitation method at room temperature. The structural properties of the prepared materials were analyzed using X-ray diffraction (XRD), confirming a single-phase tetragonal scheelite-type structure for both undoped and Co-doped samples. Optical properties were investigated through UV-Visible spectroscopy and photoluminescence (PL) spectroscopy, while the magnetic behavior of Co-doped PbWO₄ and CaWO₄ was examined using a vibrating sample magnetometer (VSM). The incorporation of Co into PbWO₄ and CaWO₄ led to variations in the optical band gap, which were determined using UV-Visible diffuse reflectance spectroscopy (DRS). A distinct blue emission was observed for both undoped and Co-doped CaWO₄ nanomaterials. Additionally, paramagnetic behavior was exhibited by Co-doped PbWO₄ and CaWO₄ nanomaterials.</p>

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Structural, optical and magnetic properties of Co doped PbWO4 and CaWO4 nanomaterials

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • M. Jeyakanthan,
  • E. Shinyjoy,
  • Uma Subramanian,
  • V. Anbazhagan

摘要

In this study, pure and Co-doped lead tungstate (PbWO₄) and calcium tungstate (CaWO₄) nanomaterials were synthesized using the coprecipitation method at room temperature. The structural properties of the prepared materials were analyzed using X-ray diffraction (XRD), confirming a single-phase tetragonal scheelite-type structure for both undoped and Co-doped samples. Optical properties were investigated through UV-Visible spectroscopy and photoluminescence (PL) spectroscopy, while the magnetic behavior of Co-doped PbWO₄ and CaWO₄ was examined using a vibrating sample magnetometer (VSM). The incorporation of Co into PbWO₄ and CaWO₄ led to variations in the optical band gap, which were determined using UV-Visible diffuse reflectance spectroscopy (DRS). A distinct blue emission was observed for both undoped and Co-doped CaWO₄ nanomaterials. Additionally, paramagnetic behavior was exhibited by Co-doped PbWO₄ and CaWO₄ nanomaterials.