K0.88Fe1.63S2 tI50 87

• Fe-K-Se
• Fe-Rb-Se
• Fe-K-Se-Tl
• Fe-Rb-Se-Tl
• Fe-K-S
• magnetic properties
• superconductivity
• optical properties
• structural properties
• superconducting transition temperature
• chalcogen
• transitional
• alkali
• disordered
• antiferromagnetic
• tetragonal