J. Mater. Sci. Technol.

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Effect of Sm+ Rare Earth Ion on the Structural, Thermal, Mechanical and Optical Properties of Potassium Hydrogen Phthalate Single Crystals

S. Sudhahar1), M. Krishna Kumar1), V. Jayaramakrishnan2), R. Muralidharan3), R. Mohan Kumar1)   

  1. 1) Department of Physics, Presidency College, Chennai 600 005, India
    2) Department of Physics, P.S.G. College of Arts and Science, Coimbatore 641 014, India
    3) Department of Science and Humanities, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College,Chennai 600 062, India
  • Received:2012-11-29 Revised:2013-01-09 Online:2014-01-15 Published:2014-01-08
  • Contact: R. Mohan Kumar
  • Supported by:

    New Delhi, India for providing financial support (Project No. 03(1200)/EMR-II).

Abstract:

Rare earth Sm+ ion doped potassium hydrogen phthalate (KHP) single crystal was grown by slow evaporation technique. Single crystal and powder X-ray diffraction analyses confirm the crystalline perfection of Sm+ ion doped KHP crystal. The functional groups of pure and Sm+ ion doped KHP crystals were identified by Fourier transform infrared spectroscopy (FTIR) spectral studies. Thermogravimetric and differential thermal analyses were carried out to study the thermal behavior of the grown crystals. UV–Vis studies explored the optical transmittance of the grown crystals in the entire visible region. The mechanical strength and etching studies were performed to assess the perfection of the pure and Sm+ ion doped KHP crystals. The refractive index and birefringence properties of the grown crystal were analyzed. The second harmonic generation efficiency of Sm+ ion doped KHP crystals was observed by Kurtz–Perry powder test.

Key words: Crystal growth, Potassium hydrogen phthalate (KHP) single crystal, Differential thermal analysis, FTIR, Hardness