1. Beijing Advanced Innovation Center for Materials Genome Engineering, and Institute of Solid State Chemistry University of Science and Technology Beijing Beijing 100083 China
2. Neutron Group National Synchrotron Radiation Research Center Hsinchu 30076 Australia
3. RIKEN SPring‐8 Center 1‐1‐1 Kouto Sayo‐cho, Sayo‐gun Hyogo 679‐5148 Japan
4. JST, PRESTO 4‐1‐8 Honcho Kawaguchi Saitama 332‐0012 Japan
5. Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
6. Institution of Physics Chinese Academic of Science No. 8, 3rd South Street, Zhongguancun, Haidian District Beijing 100190 P. R. China