1. Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
2. School of Materials Science and Engineering
3. Xi'an University of Technology
4. Xi'an 710048
5. People's Republic of China
6. Yunnan Chihong Zinc&Germanium Co.
7. Ltd.
8. Qujing 655000
9. School of Science
10. State Key Laboratory for Mechanical Behavior of Materials
11. MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter
12. Center of Suzhou Nano Science and Technology
13. Xi'an Jiaotong University