title: Studies on influence of Cd(2+) ions in unidirectional growth and characterization of l-Cysteine hydrochloride monohydrate single crystals.
abstract: Cadmium doped l-Cysteine hydrochloride monohydrate (Cd(2+)-C3H7NO2S⋅HCl⋅H2O), a non-linear optical crystal, was grown by conventional as well as unidirectional solution growth techniques. While the dimension of the conventionally grown crystal was 16×14×5mm(3), the dimension of the crystal grown unidirectional method was 32mm long and 6mm diameter. The grown crystals were studied using XRD for phase analysis, HRXRD for crystalline perfection and UV-Vis NIR spectroscopy for optical properties. The high crystalline perfection was found in the crystal grown by unidirectional method than that grown by conventional one. FTIR study indicates that Cd(2+) ion was coordinated to l-Cysteine⋅HCl⋅H2O through S ligand. The nonlinear optical character of the title compound was observed by measuring the SHG efficiency, which is 1.35times to that of KDP by Kurtz technique.
authors.affiliation: Crystal Growth and Nanoscience Research Centre, Department of Physics, Government College (A), Rajahmundry, Andhra Pradesh, India.
authors.forename: P V
authors.initials: PV
authors.lastname: Prasad
authors.affiliation: Crystal Growth and Nanoscience Research Centre, Department of Physics, Government College (A), Rajahmundry, Andhra Pradesh, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Visweswara Rao
authors.affiliation: Crystal Growth and Nanoscience Research Centre, Department of Physics, Government College (A), Rajahmundry, Andhra Pradesh, India. Electronic address: drkrcr@gmail.com.
authors.forename: K
authors.initials: K
authors.lastname: Ramachandra Rao
authors.affiliation: Crystal Growth and Nanoscience Research Centre, Department of Physics, Government College (A), Rajahmundry, Andhra Pradesh, India.
authors.forename: Ch
authors.initials: Ch
authors.lastname: Satya Kamal
authors.affiliation: Crystal Growth and Nanoscience Research Centre, Department of Physics, Government College (A), Rajahmundry, Andhra Pradesh, India.
authors.forename: T
authors.initials: T
authors.lastname: Samuel
keywords: Cd based crystal exhibited 1.3times better SHG value than standard KDP; Increase of transparency w.r.t. undoped; Unidirectional growth resulted the crystals free from structural boundaries