1. School of Materials Science and Engineering Beihang University Beijing 100191 China
2. School of Electrical Engineering and Computer Science Ningbo University Ningbo 315211 China
3. Global Innovative Centre for Advanced Nanomaterials School of Engineering The University of Newcastle Callaghan NSW 2308 Australia
4. Key Laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and Engineering (NIMTE) Chinese Academy of Sciences Ningbo 315201 China
5. Singapore Synchrotron Light Source National University of Singapore 5 Research Link Singapore 117603 Singapore
6. Department of Physics National University of Singapore Singapore 117542 Singapore
7. Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 China