1. Laboratory of Applied Physics
2. Advanced Institute of Materials Science
3. Ton Duc Thang University
4. Ho Chi Minh City
5. Vietnam
6. Institute of Research and Development
7. Duy Tan University
8. Da Nang 550000
9. Faculty of Natural Sciences, Duy Tan University
10. Department of Materials Science and Engineering, Le Quy Don Technical University
11. Ha Noi 100000
12. Faculty of Electrical Engineering Technology, Hanoi University of Industry
13. Hanoi 100000
14. Faculty of Physics, The University of Danang, University of Science and Education
15. Da Nang