Non-disordered, Nonmetal, Phonons, Trigonal

• Fe-K-Mo-O
• H-Y
• O-Si
• Li-O-Ta
• Se-Sn
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• optical phonons
• vibrational spectra
• non-disordered
• nonmetal
• chalcogen
• transitional
• binary