1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, China
2. Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
3. School of Science, University of New South Wales, Canberra, Australian Capital Territory 2601, Australia
4. Research Centre for Dielectric and Advanced Matter Physics, Department of Physics Education, Pusan National University, 30 Jangjeon-dong, Geumjeong-gu, Busan 609735, Korea
5. College of Physics & Information Technology, Shaanxi Normal University, Xi’an 710062, China
6. National Key Laboratory of Antennas & Microwave Technology, Xidian University, Xi’an 710071, China
7. Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
8. Faculty of Physics, Vilnius University, Sauletekio al. 9, 10222 Vilnius, Lithuania