Alkali, Optical properties, Tetragonal

• Fe-K-Se
• As-Fe-Li
• H-K-O-P
• As-Ba-Fe-K
• Bi-Na-O-W
• phonons
• luminescence
• Raman spectra
• wavelength for luminescence
• photoluminescence spectra
• alkali
• chalcogen
• transitional
• disordered
• nonmetal