Nik N A M A Ghani
Department of Physics, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Imam Hossain
Department of Physics, Rabigh College of Science and Arts, King Abdulaziz University, 21911 Rabigh, P.O. Box 344, Saudi Arabia; Department of Physics, Shah Jalal University of Science and Technology, Sylhet 3114, Bangladesh
Mohammad A Saeed
Department of Physics, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Hewa Y Abdullah
Department of Physics, College of Education, Scientific Department, Salahaddin University, Errbil, Krg, Iraq
Magdy Hussein
Department of Physics, Rabigh College of Science and Arts, King Abdulaziz University, 21911 Rabigh, P.O. Box 344, Saudi Arabia; Department of Physics, Faculty of Science, Zagazig University, Zagazig, Egypt