1. Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), School of Materials Science and Engineering, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu 610031, China
2. Department of Electromechanical Engineering, Sichuan Engineering Technical College, Deyang, Sichuan 618000, China
3. School of Physical Science and Technology, Southwest Jiaotong University, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, Chengdu 610031, China
4. Institute of Materials, China Academy of Engineering Physics, Mianyang 621908, China
5. School of Chemical Engineering, Sichuan University, Chengdu 610065, China
6. College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 351007, China