INVESTIGATION ON GROWTH AND CHARACTERIZATION OF SEMIORGANIC NONLINEAR OPTICAL L-VALINE MANGANESE CHLORIDE (LMC) CRYSTAL IN THE DOMAIN OF OPTO-ELECTRONIC APPLICATIONS

Physics

Appropriate amounts of L-valine Manganese chloride (LMC) were dissolved in double distilled water at room temperature. Transparent and defect free tiny crystals formed due to spontaneous nucleation. Single crystals LMC were grown by solution growth technique. Single crystal X-ray diffraction study shows that LMC crystal belongs to orthorhombic crystal system with non-centrosymmetric space group P212121. In the powder XRD pattern well defined Bragg‟s peaks are observed which reveals that the grown crystal has good crystalline nature. FT-IR analysis was carried out to identity the various functional groups present in LMC crystal. The optical transmission spectrum was recorded; the UV transparency cut-off wavelength lies at 2 nm and the percentage of transmission is high in the entire visible region from 234 nm to 1000 nm. The powder SHG efficiency of LMC crystal is about 1.25 times that of KDP. Dielectric properties are correlated with the electro-optic property of the crystals. The dielectric constant is high at lower frequencies and decreases with increase in frequency. The mechanical behavior of LMC crystal was analyzed by microhardness study which reveals that the grown crystal has high mechanical strength.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.