A study on novel semi-organic material L-phenylalanine mixed with cadmium nitrate single crystals

Abstract

Slow evaporation solutions turned out to be a good way to get single crystals of semi-organic NLO from an aqueous solution. During this experiment, the ambient temperature was used. Through X-ray diffraction analysis, a single crystal of L-phenylalanine (C9H11NO2) cadmium nitrate (Cd (NO3)2)was characterised. As a result of this construction, the P21 space group has the following cell parameters: a = 12.47 Å, b = 5.43 Å, c = 15.00 Å, α = γ = 90°, β = 107.61°. It was found that a 257 nm cut-off wavelength was found from UV–Vis-NIR spectroscopy. Aside from linear optical characteristics such as the extinction coefficient (K) and reflectance (R), this study examined a number of geometrical features. In addition, the crystal was shown to have a high level of optical transparency. Fluorescence (FL) spectrum analysis has been used in the process of investigating how the luminescence of LPCN behaves. Evidence that functional groups are present may be gleaned from the FT-IR vibrational patterns seen in the LPCN. We used a Vickers microhardness hardness tester to figure out the brittleness index (Bi), as well as the hardness (Hv), Meyer's index (n), yield strength (σy), fracture toughness (Kc), and elastic stiffness constant (C11). The evaluation of the produced crystals' dielectric properties was accomplished by adjusting the frequency. In contrast to KDP and other organic materials, the threshold value for laser-induced damage was found to be much higher. The crystal's surface morphology was analysed using SEM to get a better idea of what it looked like. EDAX analysis of the LPCN crystal was conducted to determine what elements are present in it. The non-linear optical quality of the compound that was discovered with Kurtz powder's second harmonic production in the case of Nd: YAG laser light shows that it is a potential candidate for frequency conversion. The nonlinearity coefficient (β) was measured using the open aperture Z-scan technique (Nd: YAG, 532 nm, 9 ns), and the results showed that it was 0.36 × 10–11m/W. This coefficient is the consequence of a phenomenon known as effective genuine two-photon absorption. The crystal that was created now has a fluency threshold of 3.52 × 1012 W/m2, which makes it a possible candidate for use in optical limiting devices because of its consequent optical limiting behaviour.