1. Laboratory
of Environmental Science and Technology, The Xinjiang Technical Institute
of Physics and Chemistry, Key Laboratory of Functional Materials and
Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, P. R. China
2. Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
3. Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi 830011, P. R. China