1. PG and Research Department of Physics, Thiru. Vi. Ka Govt. Arts College, Thiruvarur 610003 (Affiliated to Bharathidasan University, Tiruchirappalli - 24), Tamilnadu, India
2. Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604407, Tamilnadu, India
3. Department of Physics, Puratchi Thalaivar Dr MGR Govt Arts and Science College, Uthiramerur, 603406, Tamilnadu, India
4. Research center for Advanced Materials Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
5. Department of Chemistry, College of Science, King Khalid University, Abha- 61413, P. O. Box 9004, Saudi Arabia
6. Department of Physics, Islamiah College (Autonomous), Vaniyambadi 635752, Tamilnadu, India