Nonmetal, Rare earth, Optics, Orthorhombic

• O-Ti-Y
• O-V-Y
• Gd-Mo-O
• Al-Mn-O-Y
• Ga-Nd-O
• luminescence
• phonons
• values of luminescence
• photoluminescence spectra
• optical spectra
• nonmetal
• rare earth
• lanthanoid
• chalcogen
• transitional