Research Article
Kathiravan P, Balakrishnan T
Abstract
Single crystal of pure and doped L – Asparagine monohydrate (LAM) was successfully grown by slow evaporation method at room temperature. Transparent, bulk single crystals of size of 10 × 4 × 4 mm3 were harvested in ten days. The lattice parameters were calculated by single crystal X – ray diffraction. The effect of Cs - doping on the growth, optical and microhardness properties has been investigated. The presence of functional groups have been assigned by FTIR spectral analysis. UV – Vis – NIR spectrum was recorded to study the optical transmittance and absorbance of grown crystal. The dielectric behaviour of the crystals was also studied. The thermal properties of pure and Cs – doped LAM crystals were investigated by thermo gravimetric, differential thermal analysis and differential scanning calorimetry analyses. Chemical etch study was carried out using optical microscopy to study the dislocation, surface defects and morphology.