I41/a, Optical properties

• Ca-O-W
• Ba-O-W
• Eu-Mo-O-Sr
• As-Cu-F-N-O-S
• Gd-Na-O-W
• luminescence
• phonons
• wavelength for luminescence
• photoluminescence spectra
• wavenumber of optical phonon
• chalcogen
• transitional
• nonmetal
• rare earth
• disordered
• tetragonal