1. Electroceramics Research Lab, G. V. M Girls College, Sonepat, India
2. School of Physics & Materials Science, Thapar University, Patiala, India
3. Department of Physics, G. V. M Girls College, Sonepat, India
4. Department of Physics, Hindu College, Sonepat, India
5. National Physical Laboratories, Dr. K.S. Krishnan Marg, New Delhi, India
6. Solid State Physics Laboratory, Lucknow Road, Delhi, India