Kremers

• H-Y
• Cu-Zn
• Ge-Sb-Te
• Ge-Sb-Se-Te
• Ge-Sb-Se-Sn-Te
• electronic and electrical properties
• structural properties
• conductivity or resistivity
• phase transitions
• transitional
• binary
• metal
• disordered
• rare earth
• trigonal
• cubic
• hexagonal