Premium
Infrared lattice vibrations of CdIn 2 Se 4
Author(s) -
Neumann H.,
Kissinger W.,
Lévy F.,
Sobotta H.,
Riede V.
Publication year - 1990
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.2170251217
Subject(s) - infrared , lattice vibration , infrared spectroscopy , wavenumber , spectral line , normal mode , polarization (electrochemistry) , chemistry , molecular vibration , molecular physics , lattice (music) , vibration , sphalerite , materials science , analytical chemistry (journal) , optics , condensed matter physics , phonon , mineralogy , physics , molecule , organic chemistry , astronomy , pyrite , chromatography , quantum mechanics , acoustics
Infrared reflectivity spectra of CdIn 2 Se 4 single crystals are measured at room temperature in the wavenumber range from 180 to 4000 cm −1 for the polarization directions E ⟂ c and E ‖[112]. The spectra reveal two vibrational modes with nearly the same frequencies for both polarization directions. The frequencies of the modes with highest energy compare well with the corresponding mode frequencies in ZnIn 2 Se 4 , CuInSe 2 and AgInSe 2 . It is concluded that these modes are sphalerite‐like in nature and that their frequencies are essentially determined by the properties of the InSe bond.