1. a Electroceramics Research Laboratory, Department of Physics , GVM Girls College , Sonepat, 131001, India
2. c School of Physics & Materials Science , Thapar University , Patiala, 147004, India
3. b Department of Physics , Hindu College , Sonepat, 131001, India
4. d National Physical Laboratory , New Delhi, 110012, India
5. e Directorate of ER&IPR , DRDO, DRDO Bhawan, New Delhi, 110105, India