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<p>Nickel Ammonium Sulfate Hydrate (NASH) was fabricated using a slow evaporation technique from an aqueous solution at ambient temperature. The synthesized crystal belongs to monoclinic system with a centrosymmetric space group P2<sub>1</sub>/a. Fourier Transform Infrared Spectroscopy could identify the numerous functional groups in the grown crystal. The UV–vis transmittance spectrum was observed within the wavelength range of 200 to 1100&#xa0;nm. The band gap of a NASH single crystal (E<sub>g</sub>) was 3.65&#xa0;eV, and the cutoff was found to be 475&#xa0;nm. The yellow-orange emission of NASH exhibiting a prominent emission peak at 590&#xa0;nm was attributed to fluorescence analysis. Dielectric analysis was also carried out to analyze the dielectric loss of the NASH crystal. The thermal stability of the NASH material was up to 102&#xa0;°C based on TG–DTA Analysis. The structural behavior of the crystal occurred was investigated using hardness test, and the Meyers index was found to be 3.1. A frequency-doubled Nd: YAG laser operating at 532&#xa0;nm was employed to examine the third-order nonlinear optical properties. When compared to existing materials, my compound Nickel Ammonium Sulfate Hydrate (NASH) has more advantages to use in NLO applications.</p>

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Growth mechanisms and physicochemical properties of nickel ammonium sulfate hydrate single crystal

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • S. Sheeba Rani,
  • A. S. Jebamalar,
  • S. Sindhusha,
  • G. Vinitha

摘要

Nickel Ammonium Sulfate Hydrate (NASH) was fabricated using a slow evaporation technique from an aqueous solution at ambient temperature. The synthesized crystal belongs to monoclinic system with a centrosymmetric space group P21/a. Fourier Transform Infrared Spectroscopy could identify the numerous functional groups in the grown crystal. The UV–vis transmittance spectrum was observed within the wavelength range of 200 to 1100 nm. The band gap of a NASH single crystal (Eg) was 3.65 eV, and the cutoff was found to be 475 nm. The yellow-orange emission of NASH exhibiting a prominent emission peak at 590 nm was attributed to fluorescence analysis. Dielectric analysis was also carried out to analyze the dielectric loss of the NASH crystal. The thermal stability of the NASH material was up to 102 °C based on TG–DTA Analysis. The structural behavior of the crystal occurred was investigated using hardness test, and the Meyers index was found to be 3.1. A frequency-doubled Nd: YAG laser operating at 532 nm was employed to examine the third-order nonlinear optical properties. When compared to existing materials, my compound Nickel Ammonium Sulfate Hydrate (NASH) has more advantages to use in NLO applications.