Crystal Growth, Thermal, and Optical Studies: Thiourea Glycyl-L-Alanine Single Crystals

10.6122/CJP.20141222A

P. Malliga；A. Joseph Arul Pragasam

Chinese Journal of Physics

53卷2期（2015 / 04 / 01）

111 - 124

英文

Single crystals of pure and thiourea substituted Glycyl-L-Alanine (TU-GLA) were successfully grown by the slow evaporation solution growth method at constant temperature of 35℃. The effect of thiourea dopant on the crystal properties has been studied. Single crystal XRD analysis confirms the structure and change in the lattice parameter values for the doped crystals. The crystals were characterized by the FTIR and UV-Vis-NIR techniques. The presence of all the elements was confirmed by EDAX analysis. Thermal stability of the grown crystals was tested by TGA/DTA. Hardness studies on the as-grown crystals of GLA and TU-GLA were carried out by a static indentation test at room temperature using a Leitz Wetzlar Vickers microhardness tester. The dielectric response of the crystals was also investigated and reported.