Alkali, Transitional, K-Ta, Orthorhombic

• K-Li-Na-Nb-O-Sb-Ta
• K-O-Ta-Ti
• K-S-Ta
• K-O-P-Ta-Ti
• Cu-K-Nb-S-Ta
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• phase transitions
• thermal expansion
• alkali
• transitional
• chalcogen
• oxide