Chalcogen, Intermediate valence, Cu-Ir-S

• Cu-Fe-Ir-S
• Cu-Ir-S-Zn
• Cd-Cu-Ir-S
• Cu-Ir-Mn-S
• electronic and electrical properties
• magnetic properties
• conductivity or resistivity
• magnetic susceptibility
• phase transitions
• transitional
• chalcogen
• intermediate valence
• spinel
• sulfide
• cubic
• tetragonal
• triclinic