Cu2Mn1-xCoxSnS4: Novel kesterite type solid solutionsReportar como inadecuado




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A new family of Cu2Mn1-xCoxSnS4 chalcogenides has been synthesized by conventional solid-state reactions at 850 degrees C. The reactions products were characterized by powder X-ray diffraction XRD, energy-dispersive X-ray analysis SEM-EDS, Raman spectroscopy and magnetic susceptibility. The crystal structures of two members of the solid solution series Cu2Mn0.4Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 have been determined by single-crystal X-ray diffraction. Both phases crystallize in the tetragonal kesterite-type structure space group I 4 over bar. The distortions of the tetrahedral volume of Cu2Mn0.4 Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 were calculated and compared with the corresponding differences in the Cu2MnSnS4 stannite-type end-member. The compounds show nearly the same Raman spectral features. Temperature-dependent magnetization measurements ZFC-FC and high-temperature susceptibility indicate that these solid solutions are antiferromagnetic. C 2012 Published by Elsevier Inc.Nota general

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