Synthesis and Microstructural Studies of Iron Based LaO1-xFxFeAs   Superconducting Materials
  We report on the synthesis and microstructural studies of fluorine based iron doped superconductors. We have successfully synthesized the fluorine based new superconducting material LaO1-xFxFeAs by choosing comparatively lower temperature and longer synthesis duration. The superconducting transition temperature that we have achieved is 27.5 K which is observed at doping level of x=0.2. The structural microstructural characterizations have been done by employing XRD, SEM and TEM techniques. The SEM and TEM micrographs reveal the layered structure. 
Chandra Shekhar, Sonal Singh, P K Siwach, H K Singh and O N Srivastava