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<p>Pure potassium sodium niobate (KNN) and 6% lithium (Li)-doped KNN ceramic pellets have been synthesized using a solid-state route, and the structural, morphological, and optical properties were investigated. Further, the role of Li doping on the dielectric and ferroelectric properties was analyzed. The temperature-dependent dielectric properties of Li doped KNN showed an enhancement in the dielectric constant with Li doping (Δ<i>ε</i>&#xa0;=&#xa0;94). Li-KNN showed a higher Curie temperature of 440°C compared to 395°C obtained for KNN and the dielectric constant of KNN and Li-KNN was found to be 43 and 137, respectively, at room temperature for 100&#xa0;kHz frequency making Li- KNN a more suitable material for energy applications.</p>

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Unveiling the Role of Lithium doping: A Comparative Analysis of KNN and Li Doped KNN

  • 期刊论文

  • 发表日期：

    2025年8月29日

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  • Babita Sharma,
  • Reema Gupta,
  • Anjali Sharma,
  • Mallika Verma,
  • Arijit Chowdhuri,
  • Monika Tomar

摘要

Pure potassium sodium niobate (KNN) and 6% lithium (Li)-doped KNN ceramic pellets have been synthesized using a solid-state route, and the structural, morphological, and optical properties were investigated. Further, the role of Li doping on the dielectric and ferroelectric properties was analyzed. The temperature-dependent dielectric properties of Li doped KNN showed an enhancement in the dielectric constant with Li doping (Δε = 94). Li-KNN showed a higher Curie temperature of 440°C compared to 395°C obtained for KNN and the dielectric constant of KNN and Li-KNN was found to be 43 and 137, respectively, at room temperature for 100 kHz frequency making Li- KNN a more suitable material for energy applications.