Ba-Nb-O, Chalcogen, Nb-x polyhedra, Trigonal

• Ba-Fe-Nb-O-Si
• Ba-Co-Nb-O
• Ba-Mo-Nb-O
• Ba-Nb-O-W
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• permittivity (dielectric constant)
• phase transitions
• transitional
• chalcogen
• alkaline
• oxide