Alkaline, Disordered, Quaternary, Kim, Optical properties

• As-Ba-Co-Fe
• Ba-Cu-O-Y
• Ca-La-Mn-O
• Al-Mg-O-Ti
• Al-Ca-Mn-O
• luminescence
• optical spectra
• phonons
• photoluminescence spectra
• wavelength for luminescence
• quaternary
• disordered
• alkaline
• chalcogen
• transitional
• orthorhombic
• tetragonal
• cubic
• monoclinic
• trigonal