Ba-Nb-O-Sr, Birefringent, Chalcogen, Nonmetal

• Ba-Ca-Na-Nb-O-Sr
• electronic and electrical properties
• structural properties
• permittivity (dielectric constant)
• thermal and thermodynamic properties
• phase transitions
• nonmetal
• birefringent
• alkaline
• chalcogen
• piezoelectric
• tetragonal
• orthorhombic