Khanna, Transitional

• Ca-Eu-Mo-O
• Ca-Eu-O-W
• Eu-Mo-O-Y
• Eu-Gd-Mo-O
• Ca-O-W
• optical properties
• luminescence
• wavelength for luminescence
• photoluminescence spectra
• structural properties
• transitional
• chalcogen
• luminescent
• lanthanoid
• rare earth
• tetragonal
• monoclinic
• cubic
• orthorhombic
• trigonal