Chalcogen, Non-disordered, Transitional, Fusion, Tetragonal

• Bi-Ca-Cu-O-Sr
• Ba-Ca-Cu-O-Tl
• Fe-O-Sr
• Ag-Ga-Se
• Cr-O-Sr
• temperature for congruent melting
• transitional
• chalcogen
• non-disordered
• oxide