Crystal Research and Technology
Cryst. Res. Technol. 34 (1999) 699 - Abstract -

M. Kozielski, M. Szybowicz, F. Firszt*, S. Legowski*, H. Meczynska*, J. Szatkowski*, W. Paszkowicz**

Poznan University of Technology, Poznan
*N. Copernicus University, Torun
**Polish Academy of Science, Warsaw, Poland

Study of the A1-xBxC Mixed Crystals by Raman Scattering

Observations of Raman scattering associated with vibrational modes in Zn1-xMgxSe and Zn1-xBexSe semiconducting mixed crystals are reported. Measurements were made at room temperature for Zn1-xMgxSe crystals with Mg content in the range 0 < x < 0.43 and Zn1-xBexSe crystals with Be content in the range 0 < x < 0.41. From the polarized Raman spectra the longitudinal optical (LO) and transverse optical (TO) modes which corresponding to ZnSe-, MgSe- and BeSe-like single crystals are distinguished. Theoretical calculations of the frequencies of the ZnSe- and BeSe-like modes were also performed using modified random element isodisplacement (MREI) model. The optical modes of Zn1-xBexSe are compared with those of Zn1-xMgxSe.

Keywords: semiconductors, mixed crystals, Raman spectra


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