1. Department of Physics, Faculty of Sciences, Selçuk University, Konya 42130, Turkey
2. Department of Physics, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey
3. Mucur Technical Vocational Schools, Tech. Prog. Department, Kırşehir Ahi Evran University, Kırşehir 40100, Turkey
4. Department of Basic Sciences, Faculty of Engineering, Necmettin Erbakan University, Konya 42090, Turkey