Affiliation: | a Department of Physics, Shri Jayendrapuri Arts and Science College, Veer Narmad South Gujarat University, Bharuch-392 002, Gujarat, India b Department of Physics, Shri R. K. Parikh Arts and Science College, Gujarat University, Petlad-388 450, Gujarat, India c Department of Electronics, Sardar Patel University, Vallabh Vidyanagar 388 120, Gujarat, India |