1. College of Science/Key Laboratory of Ecophysics and Department of Physics
2. Shihezi University
3. Shihezi 832003
4. P. R. China
5. School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan
6. School of Physical Science and Technology/ Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
7. Lanzhou University
8. Lanzhou
9. China