1. Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Kolkata 700064, India
2. Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
3. Bhabha Atomic Research Centre, Mechanical Metallurgy Division, Mumbai 400085, India
4. CSIR Central Glass and Ceramic Research Institute, Transmission Electron Microscopy Laboratory, Kolkata 700032, India