1. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education & School of Physical Science & Technology, Lanzhou University, Lanzhou 730000, China
2. Catalonia Institute for Energy Research − IREC, Sant Adrià de Besòs, 08930 Barcelona, Spain
3. Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
4. Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
5. Institute of Advanced Study, Chengdu University, Chengdu 610106, China
6. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
7. Institute of Advanced Materials, Nanjing Tech University, Nanjing 211816, China
8. School of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810008, China