Alkali, Rare earth, Eu-K, Tetragonal

• As-Eu-Fe-K
• As-Eu-Fe-K-Ni
• Cu-Eu-K-Te
• Eu-K-Na-Nb-O
• Eu-K-Nb-O
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• superconductivity
• magnetic properties
• rare earth
• lanthanoid
• alkali
• transitional
• disordered