1. Electroceramic Research Laboratory
2. College of Nanotechnology
3. King Mongkut's Institute of Technology Ladkrabang
4. Bangkok 10520
5. Thailand
6. Department of Physics
7. Research Center for Academic Excellence in Applied Physics
8. Faculty of Science
9. Naresuan University
10. Phitsanulok 65000
11. National Institute for Materials Science (NIMS)
12. Tsukuba
13. Japan