1. Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 China
2. State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan 430074 China
3. Department of Physics Technical University of Denmark Kongens Lyngby 2800 Denmark
4. School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
5. Shenzhen Research Institute China University of Geosciences Shenzhen 518000 China