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

Published online by Cambridge University Press:  31 January 2012

David A. Miranda ,
S. A. López-Rivera ,
Ch. Power ,
J. A. Henao  and
M. A. Macías
David A. Miranda
Affiliation:
CIMBIOS, Escuela de Física, Facultad de Ciencias, Universidad Industrial de Santander, Cr. 27 Cll. 9, Bucaramanga, Colombia. Email: [email protected]
S. A. López-Rivera
Affiliation:
Laboratorio de Física Aplicada, Departamento de Física, Facultad de Ciencias, Universidad de los Andes, La Hechicera, Mérida-5101, Venezuela
Ch. Power
Affiliation:
Centro de Estudio de Semiconductores, Facultad de Ciencias, Universidad de los Andes, La Hechicera, Mérida-5101, Venezuela
J. A. Henao
Affiliation:
Grupo de Investigación en Química Estructural (GIQUE), Escuela de Química, Facultad de Ciencias, Universidad Industrial de Santander, Cr. 27 Cll. 9, Bucaramanga, Colombia.
M. A. Macías
Affiliation:
Grupo de Investigación en Química Estructural (GIQUE), Escuela de Química, Facultad de Ciencias, Universidad Industrial de Santander, Cr. 27 Cll. 9, Bucaramanga, Colombia.
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Abstract

Phonons and crystalline structures of Hg1−xCdxSe 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.

Keywords

X-ray diffraction (XRD)Raman spectroscopyHgCdSe
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1372: Symposium S3 – Structural and Chemical Characterization of Metal Alloys and Compounds—2011 , 2012 , imrc-1372-s3-25
Copyright
Copyright © Materials Research Society 2012

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References

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