Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2768

Full Length Research Paper

Growth, optical, thermal and electrical properties of nonlinear optical -glycine single crystal

N. Nithya
  • N. Nithya
  • Department of Physics, Sree Sastha College of Engineering, Chembarambakkam, Chennai, 600 123, India.
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R. Mahalakshmi
  • R. Mahalakshmi
  • Department of Physics, GKM College of Engineering and Technology, Chennai-600 063, India.
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S. Sagadevan
  • S. Sagadevan
  • Department of Physics, Sree Sastha Institute of Engineering and Technology, Chennai-600 123, India.
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  •  Received: 28 May 2015
  •  Accepted: 24 June 2015
  •  Published: 15 July 2015


Single crystal growth of γ-glycine has been grown by solution growth technique. The lattice parameters and crystal system of the grown crystals were confirmed by single crystal X-ray diffraction analysis. The functional groups present in the grown crystal were identified by FT-IR spectral analysis. The optical property of the γ-glycine crystal is studied by UV-Visible spectrum. Optical constants such as band gap, refractive index, extinction coefficient and electrical susceptibility were calculated to analyze the optical property from UV-Visible spectrum. The thermal analyses revealed good thermal stability of the material thus proving its suitability for NLO applications. The second harmonic generation (SHG) test has been confirmed by the Kurtz powder test. The dielectric studies of γ-glycine crystal were studied in the different frequency and different temperatures. Photoconductivity measurements were carried out in order to reveal the negative photoconductivity of the γ-glycine crystal.
Key words: Nonlinear optical (NLO), single x-ray diffraction, UV-visible spectrum, second-harmonic generation (SHG), dielectric constant, dielectric loss.