Open AccessFAR INFRARED ABSORPTION OF MIXED CRYSTALS Cd1-x MnxTe
Author(s) -
Xuechu Shen,
Hongjuan Ye,
Kang Li-xue,
Tao Feng-xiang
Publication year - 1985
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.34.1573
Subject(s) - materials science , absorption (acoustics) , absorption band , infrared , phonon , crystal (programming language) , infrared spectroscopy , absorption spectroscopy , spectral line , molecular physics , wavenumber , lattice (music) , condensed matter physics , analytical chemistry (journal) , optics , physics , chemistry , chromatography , astronomy , computer science , acoustics , composite material , programming language , quantum mechanics
We report here the results of far infrared absorption on spectra of mixed crystal Cd1-xMnxTe with different compositions x in wavenumber region of 20 to 400cm-1 and temperature region of 4.2 K to 300 K. The CdTe-like, MnTe-like reststrahlen bands and their LO-TO splitting have been resolved. A low frequency absorption band for all the samples and a quasi-local mode absorption peak for the sample with low x value have been found for the first time in the low frequency side of reststrahlen band. In addition, several two-phonon bands have also been observed on both sides of reststrahlen band. The appearence and the position of the quasi-local mode have been estimated with the lattice dynamics of defects. Other absorption bands and their probable origin have also been discussed.