1. National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
2. Department of Physics, University of Agriculture and Environmental Sciences, Owerri, Nigeria
3. Department of Physics and Astronomy, University of Nigeria, Nsukka, Nigeria
4. National Center for Physics, Quaid-i-Azam University, Islamabad, Pakistan
5. NPU-NCP Joint International Research Center on Advanced Nanomaterials and Defects Engineering, Northwestern Polytechnical University, Xi’an, China
6. Department of Physics, Federal University of Technology, Owerri, Nigeria