Structural and hardness of nonlinear optical L-alanine single crystals

S. Gokul Raj1*, G. Ramesh Kumar2

1Department of Physics, Vel Tech Dr. RR & Dr. SR Technical University, Avadi, Chennai 600062, India

2Department of Physics, University College of Engineering Arni, Anna University of Technology Chennai, Arni 632317, India

Adv. Mater. Lett., 2011, 2 (3), pp 176-182

DOI: 10.5185/amlett.2011.1219

Publication Date (Web): Apr 08, 2012

E-mail: gokulrajs@yahoo.com

Abstract


Single crystals of pure and Deuterated L-alanine have been grown by both slow cooling and seed rotation techniques. The grown nonlinear optical crystals were subjected to single crystal X-ray diffraction for determining its lattice parameters and morphology. Thermal expansion measurements were carried for the Deuterated crystals of L-alanine using thermomechanical analyzer in order to ascertain the strain tensors along the three mutually perpendicular crystallographic directions. Microhardness study was also undergone on deuterated L-alanine single crystals on a prominent plane for determining the mechanical strength of the grown crystals. The results have been discussed in detail.

Keywords

Characterization, crystal morphology, optical microscopy, recrystallization, organic compounds, nonlinear optical materials

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