Abstract:Polycrystalline samples with nominal composition FeTe1−x S x (x = 0.00-0.30) were synthesized via solid state reaction method with intermittent grinding in argon gas flow. Xray diffraction (XRD) patterns revealed the tetragonal structure (space group P4/nmm) of the samples with the presence of impurities Fe3O4 and FeTe2. By substitution with S, the a and c lattice parameters shrink probably due to the smaller ionic radius of S2− compared to Te2−. Scanning electron microscopy images showed that the samples deve… Show more
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