1. Oxide Nano Electronics Lab., Laser Materials Processing Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
2. Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
3. Accelerator Physics and Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India