Abstract
AbstractIn recent years, nonlinear optical materials have received attention due to their potential applications in photonics and opto‐electronics. In this pursuit, lithium sodium sulfate (LSS) single crystals are synthesized by adopting a slow evaporation technique at constant temperature (40 °C). The single‐crystal X‐ray diffractometer (XRD) study confirms that the grown LSS belongs to trigonal symmetry with the lattice parameters a = b = 8.452 Å, and c = 30.27 Å. The crystalline nature and purity of LSS are confirmed by the powder XRD technique. The lower cutoff wavelength and optical bandgap of the grown crystal are determined using transmission spectra and found to be 335 nm and 3.5 eV, respectively. The photoluminescence spectrum of the crystal shows the strong blue/green emission at 510 nm, which explains the second harmonic generation (SHG) property. The SHG efficiency is confirmed by the Kurtz and Perry powder method and the SHG efficiency of LSS is 1.09 times greater than that of pottasium dihydrogen phosphate (KDP). Thermal parameters of the titled material are calculated using a thermogravimetric (TG)/differential thermal analysis (DTA) analyzer. Microhardness studies and the diamagnetic nature of LSS are carried out using a Vicker's hardness tester and a vibration sample magnetometer.
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