Alkali, Non-disordered, Ternary, Tripolyhedral, Cubic, Phonons

• K-O-Ta
• Fe-Li-O
• B-H-K
• F-K-Mn
• Cl-Cs-Sn
• infrared spectra
• vibrational spectra
• Raman spectra
• wavenumber of optical phonon
• phonon dispersion
• tripolyhedral
• ternary
• alkali
• non-disordered
• perovskite