1. Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, Thailand
2. Advanced Material Research Unit, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
3. Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham, Thailand
4. Research Center for Academic Excellence in Applied Physics, Faculty of Science, Naresuan University, Phitsanulok, Thailand