Authors
Murad Ali
Department of Physics, University of Malakand,, Chakdara, Pakistan
Materials Research Laboratory, Department of Physics, University of Peshawar, 25120 KP,, Peshawar, Pakistan
Yaseen Iqbal
Materials Research Laboratory, Department of Physics, University of Peshawar, 25120 KP,, Mardan, Pakistan
Raz Muhammad
Department of Physics, Abdul Wali Khan University Mardan, 23200 KP,, Mardan, Pakistan