Ba-Ca-Cu-O-Tl, Khan, Optical properties, Oxide

• Ba-Be-Ca-Cu-O-Tl
• Ba-Ca-Cu-O-Ti-Tl
• Ba-Ca-Cu-Mg-O-Ti-Tl
• Ba-Ca-Cu-O-Tl-Zn
• phonons
• wavenumber of optical phonon
• optical absorption
• infrared spectra
• conductor
• high-tc superconductor
• alkaline
• chalcogen
• oxide
• tetragonal
• orthorhombic