Chalcogen, Critical magnetic field, Square pyramid 5-vertex

• Ba-Cu-O-Y
• Cu-La-O-Sr
• Ba-Cu-Dy-O
• Ba-Cu-Eu-O
• Ba-Cu-Ho-O
• upper critical magnetic field
• temperature derivative of upper critical magnetic field
• lower critical magnetic field
• irreversibility field
• chalcogen
• transitional
• disordered
• alkaline
• high-tc superconductor
• orthorhombic
• tetragonal
• cubic
• monoclinic