Chalcogen, Transitional, Cu-S-Ta

• Cu-K-Nb-S-Ta
• Cu-S-Ta-Tl
• Cu-S-Se-Ta
• Cu-Nb-S-Ta
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• optical properties
• phonons
• transitional
• chalcogen
• sulfide
• disordered
• orthorhombic
• cubic
• hexagonal
• monoclinic
• trigonal