Far-infrared spectroscopy of HgMnTe–MnSe mixture

Far-infrared reflectivity spectrum of Hg_0.91Mn_0.09Te-MnSe mixture, grown by Bridgman method, was measured in the 80–500 cm^–1 range at room temperature. The investigated mixture consists of MnSe clusters randomly distributed in Hg_0.91Mn_0.09Te matrix. The analysis of the far-infrared spectrum was made by a fitting procedure. The Maxwell-Garnett effective medium theory is used for modeling the effective dielectric function, and by that way calculating both the electron and phonon response. There is a good agreement between the experimental results and the applied model. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)