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<p>In present work, L-tartaric acid doped Potassium Aluminium Sulfate (LTA-PAS) single crystals were successfully synthesized using the slow evaporation method at room temperature. Structural characterization viz. single-crystal XRD confirmed that pure Potassium Aluminium Sulfate (PAS) and LTA-PAS crystallize in the cubic Pa3 space group, FTIR spectroscopy provided evidence of L-tartaric acid incorporation, as shifts in vibrational peaks were observed. Optical studies using UV-Visible spectroscopy confirmed the transmittance enhancement by 7%. Microscopic examination using SEM revealed surface morphology, while EDS confirmed the expected elemental composition. Thermal stability analysis showed that LTA-PAS exhibits improved resistance to initial decomposition and altered dehydration characteristics compared to pure PAS. Dielectric measurements indicated a higher dielectric constant and lower dielectric loss, Nonlinear optical assessments using Z-scan techniques revealed a notable increase in third-order nonlinear susceptibility (χ³) from 3.1335 × 10⁻⁷ esu (PAS) to 6.8156 × 10⁻⁷ esu (LTA-PAS), along with enhanced nonlinear refractive index (n₂) and absorption coefficient (β). The self-defocusing behaviour observed in LTA-PAS further underscores its potential for optical limiting and photonic device applications. Collectively, these findings highlight LTA-PAS as a highly promising material for nonlinear optics, dielectric components, and optoelectronic technologies.</p>

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Multifunctional characterization of L-tartaric acid influenced potassium aluminium sulfate crystal for photonic device integration

  • 期刊论文

  • 发表日期：

    2025年7月24日

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  • Shrikant Yadav,
  • Mohd. Anis,
  • B. B. Raje Shaikh,
  • Kiran A. Dongre,
  • M. I. Baig

摘要

In present work, L-tartaric acid doped Potassium Aluminium Sulfate (LTA-PAS) single crystals were successfully synthesized using the slow evaporation method at room temperature. Structural characterization viz. single-crystal XRD confirmed that pure Potassium Aluminium Sulfate (PAS) and LTA-PAS crystallize in the cubic Pa3 space group, FTIR spectroscopy provided evidence of L-tartaric acid incorporation, as shifts in vibrational peaks were observed. Optical studies using UV-Visible spectroscopy confirmed the transmittance enhancement by 7%. Microscopic examination using SEM revealed surface morphology, while EDS confirmed the expected elemental composition. Thermal stability analysis showed that LTA-PAS exhibits improved resistance to initial decomposition and altered dehydration characteristics compared to pure PAS. Dielectric measurements indicated a higher dielectric constant and lower dielectric loss, Nonlinear optical assessments using Z-scan techniques revealed a notable increase in third-order nonlinear susceptibility (χ³) from 3.1335 × 10⁻⁷ esu (PAS) to 6.8156 × 10⁻⁷ esu (LTA-PAS), along with enhanced nonlinear refractive index (n₂) and absorption coefficient (β). The self-defocusing behaviour observed in LTA-PAS further underscores its potential for optical limiting and photonic device applications. Collectively, these findings highlight LTA-PAS as a highly promising material for nonlinear optics, dielectric components, and optoelectronic technologies.