1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research & Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, 710049 Xi’an, China
2. Belarusian State University of Informatics and Radioelectronics, P. Browki 6, 220013 Minsk, Belarus
3. Centre for Micro and Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad, 44500, Pakistan