Ba-Cu-O-Y, Chalcogen, Phonons

• Ba-Cu-Fe-O-Y
• Ba-Cu-H-O-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-La-O-Y
• wavenumber of optical phonon
• Raman spectra
• wavenumber of longitudinal optical phonon
• vibrational spectra
• wavenumber of transverse optical phonon
• transitional
• rare earth
• alkaline
• chalcogen
• high-tc superconductor
• orthorhombic
• tetragonal