Cubic, Frank-kasper, Ge-Nb, Nb-x polyhedra

• Ge-Nb-Sn
• Al-Ge-Nb
• Al-Ge-Nb-Sn
• Ga-Ge-Nb
• superconductivity
• thermal and thermodynamic properties
• superconducting transition temperature
• electronic and electrical properties
• values of superconducting transition temperature
• transitional
• disordered
• frank-kasper
• metalloid
• dipolyhedral