1. Chuyang Honors College, Zhejiang Normal University, Jinhua 321004, China
2. College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
3. Department of Material Physics, Zhejiang Normal University, Jinhua 321004, China
4. Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China
5. School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China