Author/Authors :
P.M. Nikoli?، نويسنده , , K.M. Paraskevopoulos، نويسنده , , M.V. Nikoli?، نويسنده , , S.S. Vujatovi?، نويسنده , , T.T. Zorba، نويسنده , , X. Chatzistavrou، نويسنده , , B. Stamenovic، نويسنده , , D. Lukovi? Goli?، نويسنده , , V. Blagojevic، نويسنده , , A. Bojicic، نويسنده ,
Abstract :
Single crystal samples of lead telluride doped with Pr were produced using the Bridgman method. Far infrared spectra of the samples doped with 0.15 at%, 0.25 at% and 0.6 at% Pr are presented. The experimental data were numerically analyzed using a fitting procedure based on the plasmon–phonon interaction model and optical parameters were determined. Two local modes of praseodium were observed at about 158 cm−1 and 257 cm−1 at room temperature. The origin of the local modes was discussed.
