(FeIn2S4)x · (AgIn5S8)1–x alloys: Crystal structure, nuclear γ-Resonance spectra, and band gap

详细

FeIn₂S₄)_x · (AgIn₅S₈)_1–x alloy single crystals are grown in the entire region of composition parameters x by the Bridgman method. It is established that the single crystals crystallize in the cubic spinel structure. Nuclear γ-resonance spectroscopy is used to study the local configurations of iron ions in the structure of (FeIn₂S₄)_x · (AgIn₅S₈)_1–x alloys. From the transmittance spectra in the region of the fundamental absorption edge, the band gap (E_g) of the alloys is determined, and its concentration dependence is constructed. It is shown that E_g nonlinearly varies with x.