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