Phonons and Crystalline Structure of Hg 1− x Cd x S e Alloys (0 x ≤ 0.5)

Phonons and crystalline structures of Hg 1− x Cd x Se alloys (0 ≤ x ≤ 0.5) were studied by Raman spectroscopy and X-ray powder diffraction patterns at 298K. The crystalline alloys were prepared by a special combination of synthesis and the Bridgman method. Experimental data showed a face-centered cubic structure, (No. 216), for all samples, exhibiting a linear dependence for Cd molar fraction, x , for cell parameters, a , and the mass densities, ρ . Phonon frequencies were analyzed using the Romevi-Romevi model for phonons in multicomponent alloys, obtaining a fair agreement with experimental data. Furthermore, an algorithm to implement the Romevi-Romevi model is proposed.