Ba-Cu-O-Y, Chalcogen, Quaternary, Structural properties

• Ba-Cu-Er-O
• Ba-Cu-Eu-O
• Ba-Cu-Gd-O
• Ba-Cu-Dy-O
• mechanical properties
• compressibility
• thermal and thermodynamic properties
• thermal expansion
• rare earth
• chalcogen
• alkaline
• quaternary
• transitional
• orthorhombic
• tetragonal
• cubic
• trigonal