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Reststrahlen spectra of PbSe 1− x Te x )
Author(s) -
Finkenrath H.,
Franz G.,
Uhle N.
Publication year - 1979
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220950120
Subject(s) - crystallite , epitaxy , materials science , spectral line , contrast (vision) , thin film , mode (computer interface) , range (aeronautics) , optics , analytical chemistry (journal) , condensed matter physics , mineralogy , chemistry , nanotechnology , physics , composite material , computer science , metallurgy , quantum mechanics , layer (electronics) , chromatography , operating system
The TO‐ and LO‐modes of PbSe 1− x Te x mixed crystals are determined from optical measurements in the frequency range 660 to 10 cm −1 at 300, 100, and 8 K. The results for polycrystalline bulk samples as well as for thin films, prepared by hot‐wall epitaxy, show a two‐mode behaviour. This conclusion is in contrast to a number of criteria which permit a prediction of the mode behaviour.