1. Department of Physics, Govt. Degree College, Ramban, Jammu and Kashmir, India;
2. TJCM Govt. Degree College, Sujanpur Tihra, Himachal Pradesh, India;
3. Department of NanoScience and Materials, Central University of Jammu, Jammu, Jammu and Kashmir, India;
4. Department of Physics, Barkatullah University, Bhopal, Madhya Pradesh, India;
5. Department of Physics, Govt. Degree College, Ranbir Singh Pora, Jammu and Kashmir, India