Far infrared study of impurity local modes in Pr doped PbTe
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AuthorsNikolić, Pantelija M.
Paraskevopoulos, Konstantinos M.
Nikolić, Maria Vesna
Vujatović, Stevan S.
Zorba, Triantafyllia T.
Luković Golić, Danijela
Blagojević, Vladimir D.
Bojičić, Aleksandar I.
Article (Published version)
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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. © 2008 Elsevier B.V. All rights reserved.
Keywords:semiconductors / chalcogenides / infrared spectroscopy
Source:Materials Chemistry and Physics, 2009, 114, 1, 185-187