Mechanismus der Entmischung von Chromindiumsulfid-Spinellmischkristallen. Transmissionselektronenmikroskopische Untersuchungen (HRTEM)

Mechanism of the Decomposition of Chromium Indium Sulfide Spinel Solid Solutions – Transmission Electron Microscope Studies (HRTEM) The mechanism of the probably spinodal decomposition of the spinel type solid solutions MCr_2?2xIn_2xS₄ with M = Fe, Co below 850 and 1000°C, respectively, was studied by high resolution transmission electron microscope technique (HRTEM). The decomposition starts by migration of the metal ions in the tetrahedral 8a sites of the spinel structure to the 16c interstitial sites forming lamellar domains of NaCl structure and NaCl superstructure (Zr₃S₄ or LiVO₂ type), respectively.