1. Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, 050000 Shijiazhuang, China
2. Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
3. Hameed Majid Advanced Polymeric Materials Research Lab, Research and Development Center, University of Sulaimani, Qlyasan Street, Sulaymaniyah, Kurdistan Region 46001, Iraq
4. Department of Physics, College of Science, Charmo University, Chamchamal, Sulaymaniyah 46023, Iraq