Chalcogen, Ferrer roca

• Ca-O-W
• Cu-Ga-O
• O-Sr-W
• Ba-O-W
• O-Pb-W
• mechanical properties
• electronic and electrical properties
• effective charge
• valence or charge transfer
• elastic moduli
• chalcogen
• transitional
• non-disordered
• ternary
• nonmetal
• tetragonal
• monoclinic
• trigonal
• orthorhombic
• cubic