Fig. 2: RSXS diffraction patterns obtained for various field-sweeping paths in Cu₂OSeO₃.

a–c Magnetic field (B)–temperature (T) phase diagrams for B || [001], determined from the field-sweeping runs after the different paths of field cooling (a, b) and zero-field cooling (c) shown by the arrows in each figure. FM and PM represent the ferromagnetic and paramagnetic states, respectively. d–m RSXS diffraction patterns taken at 20 K with various amplitudes of magnetic field along the out-of-plane [001] direction in the field-sweeping process of Path 1 (d–g) and Path 2 (h–j) after FC and after ZFC (k–m). The color indicates the scattering intensity. Arrows between these figures represent the direction of field sweep, which correspond to the arrows in a–c.