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Studies on structural parameters and elastic constants in NaCl and CaCl2

K.S.Harish, K.S.Bhargavi, H.M.S.Farzaneh, R.Somashekar

Crystals ofmixtures of calciumchloride in sodiumchloride were grown inwater and thesewere characterised using X-ray powder patterns obtained fromanX-ray diffractometer.Williamson-Hall plotmethod was used to compute crystallite size and lattice strains in these mixed crystals. These results were compared with elastic constants computed by measuring the velocities of longitudinal and shear sound waves in these crystals. It is observed that the strength of the sodium chloride crystal decreases with addition of calcium ions.