1. Centre for Fuel Cell Technology (CFCT), International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Second Floor, IIT-M Research Park, Block E, 6 Kanagam Road, Taramani, Chennai 600113, Tamilnadu, India
2. Department of Physics, National Institute of Technology, Tiruchirappalli 620015, Tamilnadu, India