• Nagarajan Nithiya
• Ravi Vinoth Kumar
• Palanisamy Vickraman

In the present study, single crystals of Potassium Boro di-citrate (KBDC-host) doped with vanadium sulphate (guest) at different concentrations from 0.1 g to 2 g are attempted by using slow evaporation technique. It is experimentally tailored that well defined single crystals only for four weight ratios namely 0.2, 0.5, 1, and 2 g of dopant are nucleated. From Electro Paramagnetic Resonance (EPR) studies, it is found that only 2.0 g doped KBDC showed higher absorption of EPR signal. Subsequently, the hyperfine splitting lines of this single crystal observed has been utilized to obtain g-tensor and A-tensor. These parameters have revealed that the crystal exhibits orthorhombic symmetry. Further, while comparing the bond length calculation of K-O and directional cosines associated with gzz tensor, VO2+ is found to be interstially placed within the host lattice. The Rache parameter (R) contented that the VO2+ is in d3z2-r2 ground state. Molecular orbital analysis of VO2+-KBDC indicating that the metal ligand bond showed characteristics of both ionic and covalent bonding. The Single Crystal X-ray Diffraction (XRD) unit cell crystalline parameters reveal the structural co-ordination of VO2+ and KBDC. The NLO study on this crystal indexing the second harmonic generation correspond to green light with 165 mV efficiency which is found to be 3 times higher than standard KDP single crystal. The photoluminescence studies on this crystal showed green light emission of 532 nm revealing the characteristics of vanadium.

Pottasium boro dictrate; Electron Paramagnetic Resonance; Spin Hamiltonion Parameters; Second Harmonic Generation; Vanadium Sulphate.

"Electro Paramagnetic Studies on as-synthesized Vanadium Sulphate impregnated Potassium Boro Dicitrate Single Crystal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 3, page no.b584-b593, March-2024, Available :http://www.jetir.org/papers/JETIR2403169.pdf

"Electro Paramagnetic Studies on as-synthesized Vanadium Sulphate impregnated Potassium Boro Dicitrate Single Crystal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 3, page no. ppb584-b593, March-2024, Available at : http://www.jetir.org/papers/JETIR2403169.pdf