1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
2. Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
3. Key Laboratory of Magnetism and Magnetic Materials Autonomous Region, Baotou Teachers’ College, Inner Mongolia University of Science and Technology, 3 Kexue Road, Baotou, 014030, P.R. China
4. Zhejiang Ruico Advanced Material Co., Ltd, No. 188 Liangshan Road, Huzhou, 313018, PR China