International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 13 Issue: 02 | Feb 2026
p-ISSN: 2395-0072
www.irjet.net
SYNTHESIS, GROWTH & CHARACTERIZATION OF TUSN CRYSTALS FOR THEIR OPTICAL AND CONDUCTIVITY ANALYSIS SURESH B1, GURU VISHANTH K 2, BASKAR H3 , CENIC ALPHINE N4 & ROSHAN VASUDEV S5 1PG Assistant In Chemistry, Dept. of Chemistry, The Vikasa School, Millerpuram ( Affiliated to CISCE – TN044),
Thoothukudi – 628 008, Tamilnadu, India
2,3,4,5 XI Diamond Student’s [2025 – 2026], The Vikasa School, Millerpuram ( Affiliated to CISCE – TN044),
Thoothukudi – 628 008, Tamilnadu, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Slow evaporation was used to generate the
Thiourea strontium nitrate single crystals from saturated solution. Pure thiourea strontium nitrate single crystals' structure and crystallinity were verified by powder XRD, and FTIR spectroscopy revealed the frequency assignments of the several internal vibrational modes for the functional groups. UV-Vis spectroscopy was used for optical and transparency investigations. The material's value for optoelectronic applications is attested by its reduced cutoff wavelength of 241.67 nm and its high transmittance throughout the visible spectrum. Dielectric, and research was done to analyze its electrical characteristics. The reduced dielectric loss values imply that there are fewer flaws in the produced crystals. Key Words: NLO semi organic crystals, PXRD, FTIR, UVVIS Studies, Electrical Studies.
received a lot of attention due to its potential uses in second harmonic production, optical information storage devices, and telecommunications. The thiourea molecule's enormous dipole moment and capacity to build a vast network of hydrogen bonds make it an intriguing inorganic matrix modification.[5]
2. EXPERIMENTAL Slow evaporation was used to generate the thiourea strontium nitrate single crystals from saturated solution. 18.75 grams of thiourea were finely powdered and combined with 100 milliliters of distilled water in a beaker to create the saturated solution[6,7]. The polluted and scraped material of Strontium nitrate was added to this in little amounts until it was fully dissolved. Photographs of pure TUSN single crystals are shown in Fig.-1.
1. INTRODUCTION The developing field of photonics heavily relies on nonlinear optics. The use of photons for information and image processing is known as photonics. [1] Applications for nonlinear optical processes can be found in essential operations like optical switching and frequency conversion. Compared to inorganic crystals, organic crystals can have very large nonlinear susceptibilities; nonetheless, they have poor processibility and a low damage threshold. Conversely, since they lack broad electron delocalization, pure inorganic NLO materials frequently have relatively minor optical nonlinearities despite having outstanding mechanical and thermal properties. Due to impurities and flaws brought on by the incredibly non-equilibrium development circumstances, inorganic crystals produced from high temperature melts may generally have lower laser damage thresholds and greater optical homogeneities across the bulk. A semi-organic crystal is one that combines the advantageous mechanical and thermal characteristics of an inorganic counter ion with the generally high optical nonlinearity of a completely organic ion. [2,3,4] Compared to organic and inorganic materials, semiorganic materials have a significant nonlinearity, a strong resistance to laser-induced damage, a low angular sensitivity, and good mechanical hardness. Growing new semi-organic nonlinear optical materials has therefore © 2026, IRJET
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Impact Factor value: 8.315
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Fig 1 : Pure single crystal of TUSN Using a magnetic stirrer, the solution was thoroughly mixed to increase its solubility, and the operation was repeated until the last bit of the material had been dissolved. Filter paper was then used to filter the mixture. Polythene paper was used to cover the beaker's top and create a few tiny holes. This beaker was not disturbed and was maintained at room temperature. Ten to fifteen days were needed to gather the individual crystals. 2.1 Characterization of Crystals Powder X-ray diffraction experiments were performed on pure thiourea crystals. Using an XRD-ULTIMA 111 diffractometer, the generated crystals' X-ray powder diffraction pattern was acquired, and the diffraction peaks ISO 9001:2008 Certified Journal
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