Investigation on synthesis, growth, optical, thermal, etching, and mechanical characterization of lithium bis (oxalato) borate organo-metallic single crystal

Slow cooling was allowed for the successful growth of metal–organic single crystal of lithium bis (oxalato) borate (LBOB). The single crystal XRD was used to analysis the lattice cell parameters of grown LBOB crystal. The LBOB single crystal belongs to orthorhombic system with space group Pbca and calculated parameters are found to be a = 6.43 Å, b = 7.58 Å, and c = 13.22 Å. The crystalline perfection of the grown crystal was analyzed by high-resolution X-ray diffraction (HRXRD) rocking curve measurement. UV–Vis spectral analysis was used to determine the grown LBOB crystal’s band gap and transmittance (%) value. From the observed UV–Vis spectrum, the lower cut-off wavelength and band gap values of LBOB crystal are 231 nm and 5.1 eV, respectively. Thermal stability of LBOB compound was studied using TG–DTA analysis. The laser-induced damage threshold study revealed that the grown LBOB crystal possesses excellent resistance to laser radiation with a high laser damage threshold value up to 9.74 GW/cm². Vickers hardness tester was used to examine the LBOB crystal’s hardness value. Z-scan technique was employed to clarify that the third-order nonlinear susceptibility was found to be (χ³) = 3.0371 X 10^–11 esu.