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Chalcogen, Nonmetal, Phonons
O-Ti
O-Si
O-Sr-V
K-Li-O-S
Fe-K-Mo-O
wavenumber of optical phonon
Raman spectra
vibrational spectra
infrared spectra
wavenumber of longitudinal optical phonon
nonmetal
chalcogen
transitional
non-disordered
disordered
monoclinic
orthorhombic
cubic
tetragonal
trigonal