Vanadium-selenium-based misfit layer compounds-Insights into synthesis, morphology, and structure

[摘要] Different approaches and conditions of synthesis for misfit layer compounds (MLCs) are compared for the ternary systems V-Se-Bi, V-Se-Pb, and V-Se-Sn. Best results were obtained with NH4Cl as crystallisation aid, moderate annealing temperatures, and long annealing durations. The compositions, the morphology, and the structure are discussed. Depending on the stacking sequence of the compound, only plate-like or tubelike MLC crystals could be obtained. The structural properties, but not all the structural defects, of the MLC (PbSe)1+delta VSe2 are comparable to the respective ferecrystals in the literature. (c) 2021 The Author(s). Published by Elsevier B.V. CC_BY_4.0

[发布日期] 2021-11-10

[关键词] Ternary alloy system;Misfit layer compounds;Synthesis;Scanning electron microscopy;Transmission electron microscopy;X-ray diffraction