1. Center for Quantum Materials & Devices and College of Physics, Chongqing University, Chongqing 401331, P. R. China
2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, P. R. China
3. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P. R. China
4. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, P. R. China
5. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
6. Analytical and Testing Center, Chongqing University, Chongqing 401331, P. R. China