1. Department of Physics and AstronomyUniversity of Nigeria Nsukka Nigeria
2. Experimental Physics Department, National Center for Physics Islamabad Pakistan
3. NPU‐NCP Joint International Research Center on Advanced Nanomaterials and Defects EngineeringNorthwestern Polytechnical University Xi'an China
4. Experimental Physics Department, Nanosciences African Network (NANOAFNET) iThemba LABS‐National Research Foundation Somerset West South Africa
5. UNESCO‐UNISA Africa Chair in Nanosciences/Nanotechnology, College of Graduate StudiesUniversity of South Africa (UNISA) Pretoria South Africa
6. Department of PhysicsFederal University of Technology Owerri Nigeria
7. Department of Physics, Faculty of Applied and Natural SciencesCoal City University Enugu Nigeria