Abstract:S‐substituted La2Mo2O9 were synthesized by a solid‐state procedure employing ammonium sulfate (NH4)2SO4 as a sulfur source. The synthesized powders were examined using X‐ray diffraction (XRD), thermogravimetric analysis (TGA), infrared, and Raman spectroscopies. The results divulged that the stabilization of the β‐La2Mo2O9 polymorph occurred in the interval of sulfur composition 0.1≤y≤0.6. This substitution generates a linear dwindling of the unit cell volume. The decomposition of all substituted samples start… Show more
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