  The structural, electronic and optical properties of cubic double perovskite
BaCoWO6 have been studied. Neutron powder diffraction data is collected on this
sample from 6K to 300K. The crystal structure is face centered cubic, space
group being Fm3m (No. 225). We did not find evidence for long range magnetic
ordering in this system in this temperature range. The band-gap is estimated
using Uv-vis spectroscopy. The Co-K edge X-ray absorption (XAFS) spectra of
Ba2CoWO6 was analysed together with those Co-foil, which was used as reference
compounds. X-ray photoemission spectroscopy (XPS), X-ray absorption near edge
structure (XANES) and extended X-ray absorption fine structure (EXAFS) studies
give the insight of the electronic and structural information on the Co local
environment for Ba2CoWO6.
