Chalcogen, Metalloid, Quaternary, Jcrgae

• B-Ba-Na-O
• B-Ca-Gd-O
• Ga-La-O-Si
• Ag-Ga-Ge-S
• B-Cs-Li-O
• structural properties
• optical properties
• phase transitions
• electronic and electrical properties
• phase diagram
• chalcogen
• metalloid
• quaternary
• transitional
• rare earth
• trigonal
• orthorhombic
• tetragonal
• monoclinic
• cubic