Kim, Quaternary, Raman spectra

• Bi-Fe-O-Ti
• Na-Nb-P-S
• K-Nb-P-S
• Cs-Nb-P-S
• Nb-P-Rb-S
• quaternary
• chalcogen
• transitional
• oxide
• alkali
• orthorhombic
• tetragonal
• hexagonal
• monoclinic
• trigonal