Abstract—A new amino acid organic nonlinear optical material L-histidinium maleate (LHM), has been synthesized and successfully grown from aqueous solution by slow solvent evaporation method at room temperature. The solubility of the compound was measured in aqueous solution at different temperatures. The grown crystal was subjected to single crystal XRD and powder XRD studies in order to identify the structural arrangement. The chemical composition of the grown crystal was confirmed by Energy dispersive X-ray analysis (EDAX). The percentage of optical transmittance by the grown crystal was identified by UV–visible spectral study. The nonlinear optical property of the grown material was identified by the powder technique of Kurtz and Perry. The HR-SEM analysis shows the surface morphology of the grown crystal. The thermal stability of the grown crystal was found by differential thermal analysis and differential scanning calorimetry.

Index Terms—DTA, DSC, EDAX, HR-SEM, NLO, XRD.

C. Alosious Gonsago is with the Physics Department, Faculty of Science and Humanities, A.J. College of Engineering, Affiliated to Anna University, Chennai, India, (email: c.alosious@gmail.com).
S. Pandi was with the, PG & Research Department of Physcs, Presidency College, Chennai, India, (email: pandisangu@gmail.com).
H. M. Albert and A. J. A. Pragasam are with the, Physics Department, Sathyabama University, Chennai-600119, India, (email: merinagonsago@gmail.com, drjosephsu@gmail.com).

Cite: C. Alosious Gonsago, S. Pandi, Helen Merina Albert, and A. Joseph Arul Pragasam, "L-Histidinium Maleate Crystals for Nonlinear Frequency Conversion," International Journal of Applied Physics and Mathematics  vol. 2, no. 1, pp. 050-057, 2012.