Alkali, Non-disordered, Ternary, Transitional, Phonons, Tetragonal

• As-Fe-Li
• Fe-K-Se
• As-Fe-Na
• Ag-C-Cs
• K-O-V
• Raman spectra
• infrared spectra
• vibrational spectra
• wavenumber of optical phonon
• phonon dispersion
• transitional
• non-disordered
• alkali
• ternary