K2NiF4 tI14 139, O-Ru-Sr, Structural properties

• Cu-La-O-Ru-Sr
• O-Rh-Ru-Sr
• Mn-O-Ru-Sr
• La-O-Ru-Sr-Zn
• high-tc superconductor
• cuprate
• alkaline
• chalcogen
• oxide
• tetragonal