Synthesis, crystal structures, and optical properties of NaCdPnS3 (Pn=As, Sb)

Lattice dynamical study of NaCdAsS[sub 3]

“…The Raman and infrared modes are calculated using the short range force constant model and are given in table 1 along with experimental results [1]. It is obvious from table 1 that there is a good agreement between the theory and the experiment establishing the validity of present calculations.…”

“…NaCdAsS 3 crystallizes in monoclinic structure having space group P21/n [1]. The primitive cell contains four formula units.…”

“…Further, the stretching forces alone are inadequate to account for transverse vibrations in the lattice and therefore bending forces were included in the calculation. The calculation involves the lattice parameters [1], masses of the atoms, symmetry coordinates and the experimentally available Raman and infrared wavenumbers [1] as input parameters.…”

“…Recently, Wu et al [1] studied Raman and Infrared phonons in case of NaCdAsS 3 in its monoclinic phase experimentally and assigned only 11 Infrared modes out of 36 and 7 Raman modes, again out of 36 modes. They could not assign all the Raman and Infrared modes, may be due to experimental limitations.…”

Synthesis, crystalline perfection, optical and dielectric studies on metal–organic tri-allylthiourea cadmium chloride (ATCC) nonlinear optical single crystal by solution growth technique

“…In spite of considerable research in this field, the optimization of growth conditions to grow good quality crystals in a large scale and the preparation of new materials in single crystal forms, are still regarded as a fine combination of science, technology and art [2]. The demand for nonlinear optical crystals with superior properties is mounting due to quantum jump in the design of nonlinear optical devices with higher performance with progress in crystal growth technology.…”