  We report superconductivity in the SmFe0.9Co0.1AsO system being prepared by
most easy and versatile single step solid-state reaction route. The parent
compound SmFeAsO is non-superconducting but shows the spin density wave (SDW)
like antiferromagnetic ordering at around 140K. To destroy the
antiferromagnetic ordering and to induce the superconductivity in the parent
system, the Fe2+ is substituted partially by Co3+. Superconductivity appears in
SmFe0.9Co0.1AsO system at around 14K. The Co doping suppresses the SDW anomaly
in the parent compound and induces the superconductivity. Magnetization
measurements show clearly the onset of superconductivity with Tcdia at 14K. The
isothermal magnetization measurements exhibit the lower critical fields (Hc1)
to be around 200Oe at 2 K. The bulk superconductivity of the studied
SmFe0.9Co0.1AsO sample is further established by open diamagnetic M(H) loops at
2, and 5K. Normal state (above Tc) linear isothermal magnetization M(H) plots
excluded presence of any ordered magnetic impurity in the studied compound.
