M. A. Khan

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan

Azhar Ahmed

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan

N. Ali

National Center of Physics, Quaid-i-Azam University Campus Islamabad, Pakistan

Tariq Iqbal

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan

Ayaz Arif Khan

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan

Mahboob Ullah

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan

Muhammad Shafique

Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan