Ba-Ca-Cu-O-Tl, Disordered, Khan, Orthorhombic

• Ba-Ca-Cu-O-Ti-Tl
• Ba-Ca-Cu-Mn-O-Tl
• Ba-Ca-Cu-Mg-O-Ti-Tl
• Ba-Ca-Cd-Cu-Mg-O-Tl
• optical properties
• phonons
• superconductivity
• wavenumber of optical phonon
• superconducting transition temperature
• high-tc superconductor
• disordered
• chalcogen
• alkaline
• oxide