1. Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2. Department of Physics, Faculty of Science, Sule Lamido University, 048 Kafin Hausa, Jigawa State, Nigeria
3. Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
4. RGS Corporation Sdn Bhd, 43300 Seri Kembangan, Selangor, Malaysia
5. Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, No. 566 University Road West, 253023 Dezhou, Shandong, China
6. Department of Physics, Faculty of Science, Kaduna State University, 2339 Tafawa Balewa Way, Kaduna State, Nigeria