Alkali, Chalcogen, Conductor, Semiconductor, Fe-K-Se, Tetragonal

• Fe-K-Se-Tl
• Fe-K-S-Se
• Fe-K-Mn-Se
• Fe-K-Se-Zn
• magnetic properties
• superconductivity
• optical properties
• superconducting transition temperature
• values of superconducting transition temperature
• conductor
• antiferromagnetic
• alkali
• chalcogen
• diamagnetic