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Phonons and Crystalline Structure of Hg1−x Cd x S e Alloys (0 < x ≤ 0.5)

  • David A. Miranda (a1), S. A. López-Rivera (a2), Ch. Power (a3), J. A. Henao (a4) and M. A. Macías (a4)...

Abstract

Phonons and crystalline structures of Hg1−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.

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