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Raman scattering study of ZnBeSe semiconducting mixed crystals

✍ Scribed by M. Szybowicz; M. Kozielski; F. Firszt; S. Łęgowski; H. Męczyńska

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
202 KB
Volume
38
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

The results of a study of Raman scattering of Zn~1‐x~Be~x~Se mixed crystals are reported. Raman measurements were performed for crystals with x = 0.12 and x = 0.25 Be at room temperature and liquid nitrogen temperature. From the Raman spectra the longitudinal optical and transverse optical modes which correspond to ZnSe‐like and BeSe‐like were distinguished. Theoretical calculations of frequencies of BeSe modes and force constants for Zn~1‐x~Be~x~Se were also performed using modified random element isodisplacement model. It has been shown that the dependence of the phonon energy on temperature may be described by the modified Klemens model.

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