Alkali, Disordered, Transitional, Optical properties, Tetragonal

• Fe-K-Se
• As-Fe-Li
• As-Ba-Fe-K
• Bi-Na-O-W
• Br-C-H-K-N-O-Pt
• phonons
• luminescence
• optical spectra
• photoluminescence spectra
• Raman spectra
• transitional
• disordered
• alkali
• chalcogen
• nonmetal