National Institute of Technology Tiruchirappalli, National Institute of Technology Tiruchirappalli, Tamkang University, National Institute of Technology Tiruchirappalli, Department of Physics, Tamkang University, University of Science and Technology of China (USTC) - National Synchrotron Radiation Laboratory Research Center, University of Science and Technology of China (USTC) - National Synchrotron Radiation Laboratory Research Center and National Institute of Technology Tiruchirappalli