Alkaline, Borate, Chalcogen, Optical properties, Trigonal

• B-Ba-O
• B-Ba-Na-O
• B-Ba-Eu-Gd-O
• B-O-P-Sr-U
• Al-B-Ba-Ce-O-Tb
• luminescence
• photoluminescence spectra
• wavelength for luminescence
• phonons
• non-linear optics
• metalloid
• alkaline
• chalcogen
• borate
• nonmetal