1. Key Laboratory of Applied Surface and Colloid Chemistry
2. Ministry of Education
3. Shaanxi Key Laboratory for Advanced Energy Devices
4. Shaanxi Engineering Lab for Advanced Energy Technology
5. School of Materials Science & Engineering
6. School of Physical Science and Technology
7. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
8. Lanzhou University
9. Lanzhou 730000
10. P. R. China
11. State Key Laboratory of Functional Materials for Informatics
12. Shanghai Institute of Microsystem and Information Technology
13. Chinese Academy of Sciences
14. Shanghai 200050
15. Department of Microelectronic Science and Engineering
16. Faculty of Science
17. Ningbo University
18. Ningbo