A. Parveen - PG and Research Department of Physics, AVS college of Arts and Science, Ramalingapuram, Tamilnadu, 636106, India
N. Surumbarkuzhali - Department of Physics, Government Arts College (Autonomous), Salem, Tamilnadu 636007, India
Mohd Shkir - King Khalid University
Ehab El Sayed Massoud - King Khalid University
V. Manjunath - Yeungnam University
Chang-Hoi Ahn - Yeungnam University
Si-Hyun Park - Yeungnam University
Ehab El Sayed Massoud - King Khalid University