Author/Authors :
P.M. Nikolic، نويسنده , , K.M. Paraskevopoulos، نويسنده , , S.S. Vujatovic، نويسنده , , M.V. Nikolic، نويسنده , , A. Bojicic، نويسنده , , T.T. Zorba، نويسنده , , B. Stamenovic، نويسنده , , V. Blagojevic، نويسنده , , M. Jovic، نويسنده , , M. Dasic، نويسنده , , W. Konig، نويسنده ,
Abstract :
Single crystal samples of lead telluride doped with Gd were grown using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 K to 300 K were measured. The experimental diagrams were numerically analyzed using a fitting procedure based on the plasma–phonon interaction model and the optical parameters were determined, while two local modes of gadolinium were observed at about 155 cm−1 and 230 cm−1 at room temperature. The origin of these local vibrational impurity modes was discussed.
