1. Department of Materials Science and Engineering; Faculty of Engineering, Afyon Kocatepe University; Afyon Turkey
2. Department of Physics; Faculty of Art and Science, Süleyman Demirel University; Isparta Turkey
3. Department of Physics; Faculty of Art and Science, Niğde University; Niğde Turkey
4. Department of Physics; Faculty of Art and Science, Erciyes University; Kayseri Turkey