1. Key Laboratory of Applied Chemistry
2. Yanshan University
3. Qinhuangdao 066004
4. P. R. China
5. Department of Materials Science and Engineering
6. College of Engineering
7. Peking University
8. Beijing Key Laboratory for Magneto Electric Materials and Devices (BKLMMD)
9. Beijing 100871
10. Department of Physics and Engineering Physics
11. University of Saskatchewan
12. Saskatoon SK
13. S7N 5B2 Canada
14. Institute of Sustainable Energy/College of Science