1. Key Laboratory of Novel Materials for Sensor of Zhejiang Province
2. Institute of Advanced Magnetic Materials
3. Hangzhou Dianzi University
4. Hangzhou 310018
5. P. R. China
6. Institute of Ion Beam Physics and Materials Research
7. Helmholtz-Zentrum Dresden-Rossendorf
8. Dresden 01328
9. Germany
10. College of Physics and Optoelectronic Engineering
11. Shenzhen University
12. Shenzhen 518060
13. School of Advanced Materials
14. Peking University
15. Shenzhen Graduate School
16. Shenzhen 518055