1. CAS Key Laboratory of Magnetic Materials and Devices; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 P. R. China
2. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 P. R. China
3. University of Chinese Academy of Sciences; Beijing 100049 P. R. China
4. Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions; High Magnetic Field Laboratory; Chinese Academy of Sciences; Hefei 230031 P. R. China
5. Collaborative Innovation Center of Advanced Microstructures; Nanjing University; Nanjing 210093 P. R. China
6. University of Science and Technology of China; Hefei 230026 P. R. China
7. School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore