Investigation on Physical Properties of Semiorganic Nonlinear Optical Glycine Zinc Sulfate Single Crystal

Abstract

Nonlinear optical single crystals of Glycine Zinc Sulfate (GZS) were grown by slow evaporation technique. Single crystal X-ray diffraction analysis revealed the crystal system and lattice parameter values. Powder X-ray diffraction analyses have been carried out and the diffraction patterns have been indexed. The optical properties of the crystals were determined using UV-Visible spectroscopy. Optical constants such as band gap, refractive index, extinction coefficient and electric susceptibility were determined from UV-Visible spectroscopy. The refractive index was determined using Brewster's angle method. Hardness of the GZS crystal was estimated by Vicker's hardness studies. Second Harmonic Generation (SHG) of GZS crystal was investigated by Kurtz powder technique. The dielectric constant and dielectric loss measurements were carried out for different temperatures and frequencies. The photoconductivity studies confirm that the grown crystal has negative photoconductivity nature. In order to investigate the growth mechanism and surface features, etching studies are carried out for the crystal.

Structural, morphological, dielectric and optical properties of double perovskites RBaFeTiO6 (R = La, Eu)

“…The low values of dielectric loss in the high-frequency region suggest that the good crystalline quality of these materials and offers potential for use in the electronic and electrical industry. 45,46 Fig. 9 depicts the frequency (angular) dependence of electrical conductivity (s) at different temperatures.…”

Studies on the growth and characterization of L-cysteine hydrogen fluoride single crystal

“…It is noticed that the UV spectrum shows the presence of a wide transparency window lying between 320 nm and 1200 nm at λ max = 228 nm. The prohibited energy gap was estimated as 5.45 eV, which is a typical value of any dielectric material [12], from the relationship E g = 1.243 × 10 3 /λ max . It is, therefore, evident from the analysis of the optical transmission spectrum that the grown crystal is transparent in the visible region without any absorption peak, which is the essential requirement for any nonlinear optical crystal used in parametric oscillator, SHG and similar applications.…”

Effect of copper doping on the optical and dielectric parameters of glycine zinc sulfate (GZS) single crystals

“…The optical band gap energy (E g ) and some optical constants have been calculated for GZS crystal in some articles. Indirect E g was reported as 3.8 eV [4], while direct E g was reported as 4.25 eV [22], 4.55 eV [7] and 5.4 eV [17]. Some optical constants have been calculated, such as refractive index (n) ,which was reported as 1.587 at λ = 1000 nm and extinction coefficient (K ex. )…”