Ba-Cu-O-Y, Rare earth, Spectra

• Ba-Cu-Fe-O-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-O-Y-Zn
• Ba-Ca-Cu-Fe-O-Y
• optical properties
• magnetic properties
• Moessbauer spectra
• phonons
• optical spectra
• rare earth
• transitional
• alkaline
• chalcogen
• high-tc superconductor
• orthorhombic
• tetragonal
• trigonal