Electronic and electrical properties, Langasite, Oxide, Trigonal

• Ga-La-Nb-O
• Ga-Ge-O-Sr
• Al-Ca-Nb-O-Si
• Ca-Ga-Ge-O
• Ga-Ge-La-O
• electrical conductivity
• effective mass
• electronic energy gap
• values of electronic energy gap
• permittivity (dielectric constant)
• chalcogen
• langasite
• oxide
• metalloid