1. Institute of Materials/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
2. Shanghai Key Laboratory of High Temperature Superconductors, Shanghai 200444, China
3. School of Materials and Engineering, Shanghai University, Shanghai 200444, China
4. School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia
5. School of Civil & Environmental Engineering, University of Technology Sydney, Ultimo, New South Wales 2007, Australia