1. Physics Department, Faculty of Science, Cairo University, Giza 12613, Egypt
2. Zagazig Higher Institute of Engineering and Technology, Zagazig 44519, Egypt; and Department of Physics, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
3. Department of Physics, Faculty of Science, Zagazig University, Zagazig 44519, Egypt (Corresponding author), e-mail: rania.7.8.2016@gmail.com, https://orcid.org/0000-0002-2209-2503