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Infrared optical properties of (CuGe 2 P 3 ) 1− x (6 Ge) x solid solutions
Author(s) -
Riede V.,
Sharif N.,
Neumann H.,
Sobotta H.,
Omar M. S.
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170240424
Subject(s) - chemistry , infrared , analytical chemistry (journal) , infrared spectroscopy , solid solution , spectral line , force constant , crystallography , optics , physics , molecule , organic chemistry , chromatography , astronomy
Abstract Infrared reflectivity spectra of (CuGe 2 P 3 ) 1− x (6 Ge) x mixed crystals with compositions in the range x = 0.07–0.33 are measured at room temperature in the wavenumber range from 180 to 4000 cm −1 . An analysis of the spectra reveals six vibrational modes. The composition dependence of the mode frequencies and of the free carrier concentration and mobility is given and compared with infrared optical data for CuGe 2 P 3 .