1. Crystal Growth Centre Anna University Chennai 600025 India
2. RIC-IITM DRDO Chennai 600113 India
3. Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam 603102 India
4. Department of Atomic Energy Homi Bhabha National Institute Mumbai 400 094 India
5. SSPL Lucknow Road, Timarpur Delhi 110 054 India
6. Department of Applied Physics KTH-Royal Institute of Technology Stockholm SE-100 44 Sweden