Author/Authors :
O. PAGES، نويسنده , , M. Ajjoun، نويسنده , , T. Tite، نويسنده , , D. Bormann، نويسنده , , E. Tournié، نويسنده , , M. Ducarroir، نويسنده , , A. O. Maksimov ، نويسنده , , M.C. Tamargo، نويسنده ,
Abstract :
At intermediate Be-content, random Zn1−xBexTe and Zn1−xBexSe alloys, which open the class of mixed crystals with contrasted shear moduli, can be described in terms of composite systems made mainly of a hard-like (Be-rich) and a soft-like (Zn-rich) intermixed continua. This results in an atypical three-modes Raman response. A straightforward model based on percolation is used to simulate the spectra; no adjustable parameter is required. Preliminary results obtained with low-N content GaNxAs1−x alloy suggest that our picture extends to arriving III–V alloys with contrast in the bulk modulus.
