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We conducted a detailed investigation on (Ba0.85Ca0.15)1-xLa2/3xTi0.90Zr0.10O3(BCLTZ) samples synthesized by solid state reaction procedure. We systematically examined the impact of La-doping on structure, surface morphology, permittivity, ferroelectric, piezoelectric, and energy storage characteristics. Room temperature X-ray diffraction plots reveal that the prepared composition crystallizes with perovskite phase with no impure phase. Surface morphological characteristics, examined using scanning electron microscopy, emphasize that La3+ doping significantly reduces grain size. Small grain size (~1.68 μm) has been observed in x = 0.02 composition. We observed well-saturated loops at 40 kV/cm, as well as maximum values of Pr~0.02 μC/cm2 and Ps~7.94 μC/cm2 are observed for x = 0.02 composition. We found that adding La3+ alters the polarizing ability and makes hysteresis plots thinner. The BCLTZ samples with x = 0.02 depict the optimum energy storage characteristics: storage density (Wrec)~93 mJ/cm3 and efficiency (η)~80.2%.

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Influence of La Doping on Structure, Microstructure, Dielectric, and Energy Storage Properties of Lead-Free Ba0.85Ca0.15Ti0.90Zr0.10O3 Ceramics

  • 会议论文

  • 发表日期：

    2025年

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  • Rajat Syal,
  • Priyanka Sharma,
  • Rahul Goel,
  • K. K. Sharma,
  • Meena Devi,
  • Sanjeev Kumar

摘要

We conducted a detailed investigation on (Ba0.85Ca0.15)1-xLa2/3xTi0.90Zr0.10O3(BCLTZ) samples synthesized by solid state reaction procedure. We systematically examined the impact of La-doping on structure, surface morphology, permittivity, ferroelectric, piezoelectric, and energy storage characteristics. Room temperature X-ray diffraction plots reveal that the prepared composition crystallizes with perovskite phase with no impure phase. Surface morphological characteristics, examined using scanning electron microscopy, emphasize that La3+ doping significantly reduces grain size. Small grain size (~1.68 μm) has been observed in x = 0.02 composition. We observed well-saturated loops at 40 kV/cm, as well as maximum values of Pr~0.02 μC/cm2 and Ps~7.94 μC/cm2 are observed for x = 0.02 composition. We found that adding La3+ alters the polarizing ability and makes hysteresis plots thinner. The BCLTZ samples with x = 0.02 depict the optimum energy storage characteristics: storage density (Wrec)~93 mJ/cm3 and efficiency (η)~80.2%.