Far-infrared spectra of Pb(1-x)Mn(x)Tealloys
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Far-infrared reflectivity spectra of Pb1-xMnxTe (0.0001 less than or equal to x less than or equal to 0.1) single crystals were measured in the 10-250 cm(-1) range at room temperature. The analysis of the far-infrared spectra was made by a fitting procedure based on the model of coupled oscillators. In spite of the strong plasmon-LO phonon interaction, we found that the long wavelength optical phonon modes of these mixed crystals showed an intermediate one-two mode behavior. (C) 2001 Elsevier Science B.V. All rights reserved.
Кључне речи:phonons / plasmon-LO phonon coupling / mixed crystals
Извор:Infrared Physics and Technology, 2001, 42, 6, 541-545
ISSN: 1350-4495 (print)