1. Nanomagnetism and Microscopy Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Kandi, Sangareddy502285, Telangana, India
2. Consiglio Nazionale Delle Ricerche, CNR-SPIN c/o Università“G. D’Annunzio”, Chieti66100, Italy
3. Chemistry Department, University of Turin, Via Pietro Giuria, 7, Torino10125, Italy
4. Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad500058, India