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