The Effect of Phosphate Mixing on Structural, Spectroscopic, Mechanical and Optical Properties of Zinc tris Thiourea Sulphate (ZTS) Single Crystals


Zinc tris Thiourea Sulphate (ZTS) is a semi organic non-linear optical crystal. The ZTS and phosphate mixed (in different mol %) ZTS crystals have been grown from aqueous solution using the slow evaporation method. Single crystal XRD were carried out for ZTS and phosphate mixed ZTS crystals to determine cell parameters. FTIR analysis identified modes of vibrations of different molecular groups and confirms the presence of phosphate ion. The UV-Vis-NIR spectrum shows that the material has wide optical transparency in the entire visible region. The second harmonic generation (SHG) was confirmed by Kurtz powder method. It is found that 10 mol % of phosphate mixed ZTS crystal has better SHG efficiency than pure ZTS crystal. The Vicker microhardness test was carried out on the grown crystals and Vicker’s Hardness Number was found increase with increase in phosphate mixing.

Share and Cite:

A. Raj and C. Raja, "The Effect of Phosphate Mixing on Structural, Spectroscopic, Mechanical and Optical Properties of Zinc tris Thiourea Sulphate (ZTS) Single Crystals," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 5, 2012, pp. 471-478. doi: 10.4236/jmmce.2012.115033.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Marcy, H. O., Warren, L. F., Webb, M. S., Ebbers, C. A., Velsko, S. P., Kennady, G. C., and Catella G. C., 1992, “Second-harmonic generation in zinc tris(thiourea) sulphate” Applied Opts., Vol. 31, Ed. 24, pp. 5051-5060.
[2] Wang X. Q., Xu D., Yuan D. R., Tian Y. P., Yu W. T., Sun S. Y., Yang Z. H., fang Q., Lu M. K., Yan Y. X., Meng F. Q., Guo S. Y., Zang G. H., and Jiang M. H., 1999, “Synthesis, structure and properties of a new nonlinear optical material: zinc cadmium tetrathiocyanate” Mater Res. Bull. Vol. 34, pp. 2003-2011.
[3] Marcy H. O., Rosker M. J., Warren L., Cunningham P. H., Thomas C. A., Deloach L. A., Velsko S. P., Enners C. A., Liao J. H., and Kamatzidis M. G., 1995, “L-Histidine tetrafluoroborate: a solution-grown semiorganic crystal for nonlinear frequency conversion” Opt. Lett. Vol. 20, pp. 252-254.
[4] Sastry P. U., Chitra R., Choudhury R. R., and Ramanadhan M., 2004,” Zinc (tris) thiourea sulphate (ZTS): A single crystal neutron diffraction study” Pramana J. of physics, 63, pp. 257-261.
[5] Ushasree P. M., Jayavel R., Subramanian C., Ramasamy P., 1999, “Growth of zinc thiourea sulfate(ZTS) single crystals–a potential semiorganic NLO material”, J. Cryst. Growth, 197, pp. 216-220,
[6] Gupte S. J., and Desai C. F.,1999 ” Vickers Hardness Anisotropy and Slip System in Zinc (Tris) Thiourea Sulphate Crystals”, Cryst. Res. Technol. 34, pp.1329-1332.
[7] Ushasree P. M., Jayavel R., Ramasamy P., 1999, “Growth and Characterisation of phosphate mixed ZTS single crystals”, Mat. Science and Eng. B65, pp. 153-163.
[8] Selvasekarapandian S., Vivekanandian K., Kolandaivel P., and Gundurao T. K., 1997, “Vibrational Studies of Bis(thiourea) Cadmium Chloride and Tris(thiourea) Zinc Sulphate Semiorganic Non-linear Optical Crystals”, Cryst. Res. Technol. 32, pp. 299-309.
[9] Ushasree P.M., Jayavel R., Subramanian C. and Ramasamy P., 1999, “Growth of ZTS Single Crystal: A potential semiorganic NLO Material” J. Crystal Growth 197, pp. 216-223.
[10] Silverstein R. M., Clayton Basseler G., and Morrill T. C., “Spectrometric Identificaton of Organic Compounds”, V-Edn. John Willey & Sons, inc. New York 1998.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.