Chalcogen, Transitional, Nb, Orthorhombic

• Na-Nb-O
• K-Na-Nb-O
• K-Nb-O
• Bi-Nb-O-Sr
• Ag-Nb-O
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• phase transitions
• permittivity (dielectric constant)
• transitional
• chalcogen
• oxide
• disordered