GROWTH AND CHARACTERIZATION OF MGXCD1-XSE SINGLE-CRYSTALS

Single crystals of MgxCd1-xSe over the range 0 less than or equal to x less than or equal to 0.46 were grown by the modified chemical transp ort reaction technique. The structural and optical properties of the M gxCd1-xSe single crystals were investigated at room temperature from X -ray powder diffraction and optical absorption measurements. It has be en found that the MgxCd1-xSe has a wurtzite structure over the investi gated composition range. The lattice constants of a and c decrease lin early with increasing a composition x. The band gap increases linearly with increasing a composition, x which is represented by a linear rel ationship E-g(x) = 1.742 + 1.813 x.