RAMAN-SCATTERING IN ZN(1-X)MGXSE MIXED-CRYSTALS

This paper presents results of investigations of the Raman scattering of vibrational modes in Zn1-xMgxSe crystals for the range of compositi on 0 < x < 0.43. The Raman polarized spectra of Zn1-xMgxSe were measur ed at room temperature. The typical Raman spectrum shows four peaks wh ich can be interpreted as longitudinal and transverse optical ZnSe-lik e and MgSe-like phonons. The ZnSe-like and MgSe-like vibrations can be described by tile modified random element isodisplacement model. Resu lts of the Raman measurements in tile investigated range of compositio n confirm the two-mode behaviour of the optical phonons in the mixed Z n1-xMgxSe crystals.