Alkali, Nonmetal, Transitional, Bando

• K-Na-Nb-O
• K-Na-Nb-O-Pb-Ti
• K-Na-Nb-O-Sr-Ti
• K-Na-Nb-O-Sr-Zr
• Ca-K-Na-Nb-O-Zr
• electronic and electrical properties
• permittivity (dielectric constant)
• structural transitions
• temperature for structural transition
• phase transitions
• nonmetal
• transitional
• chalcogen
• alkali
• multinary
• tetragonal
• orthorhombic
• cubic
• trigonal