supported by the National Natural Science Foundation of China(Grant No.11274356);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB07000000);supported in part by the U.S.Department of Energy under the Cooperative Agreement No.DENA0001982
The structure and magnetism of elementalir on(Fe)undergo significant changes under high temperatures.The lowtemperatureα-Fe adopts a bodycentered cubic(bcc)crystal lattice,and is ferromagnetic below the Curie tempera...