~121Sb mossbauer and X-ray photoelectron spectroscopy studies of the electronic structure of some antimony misfit layer compounds

摘要

The chemical environment of Sb atoms in misfit layer sulfides (SbS)_p TS_2 (T=Nb, Ti and Ta) was examined by using ~121Sb mossbauer (MS) and X-ray photoelectron spectroscopy (XPS). ~121Sb mossbauer spectra exhibited an asymmetric profile that can be interpreted by assuming two different coordination numbers for trivalent Sb ions. However, these data do not give evidence for the presence of a significant Sb atom fraction of valence similar to metallic antimony as reported by X-ray single-crystal structure calculations.