Preparation and Electrical Properties of (NaCl)_x (NaBr)_y−x (NaI)_1−y Crystals

Abstract

We have grown (NaCl) _x (NaBr) _y−x (NaI)_1−y crystals for various values of x and y by the melt method. Densities and refractive indices of all the grown crystals were determined and used for the estimation of composition in the crystal. Lattice parameters were determined from the X-ray powder diffraction data. DC and AC measurements were done at various temperatures ranging from 40 to 150°C. Activation energies were also estimated. The bulk composition has complicated influences on the electrical properties.

Keywords:

• Activation energies
• Alkali halides
• Crystal growth
• DC conductivity
• Density
• Dielectric constant
• Dielectric parameters
• Electrical properties
• Lattice parameters
• Melt method
• Mixed crystals
• Polycrystals
• Refractive index
• Solid solutions
• XRD