Alkali, Transitional, Ba-K, Tetragonal

• As-Ba-Fe-K
• As-Ba-Co-Fe-K
• Ba-K-Nb-O
• As-Ba-Cu-Fe-K
• Ba-K-Na-Nb-O-Ti
• electronic and electrical properties
• thermal and thermodynamic properties
• superconductivity
• superconducting transition temperature
• magnetic properties
• transitional
• alkaline
• alkali
• disordered
• pnictogen