Extended Data Fig. 1: The crystal structure, magnetic configurations and magnetic phase diagrams of the (001) thin plate of Co8Zn9Mn3.
From: Transformation between meron and skyrmion topological spin textures in a chiral magnet
a, b, Schematics of the crystal structure with space group P4132 (a) and P4332 (b). Coloured arrows indicate the crystal axes. c, Magnetic phase diagram (approximate) of the hex-SkL30 and sq-ML observed over field-increasing runs from low (less than 10 mT) field cooling for a (001) thin plate of Co8Zn9Mn3. The phase determination was based on the continuous magnetic-field scans at fixed temperatures in intervals of ΔT = 5 K. The arrow indicates the field-increasing run for the Lorentz TEM images shown in Fig. 2a–c. FM, field-magnetized ferromagnetic structure. d, e, Periodic stripe domains with a single wavevector along the [100] axis at 95 K (d), the helical structure with possible multi-domains composed of helices with in-plane wavevectors (area B) and with out-of-plane wavevectors (dark regions; area A) at 295 K (e), respectively. f, A hex-SkL realized under 65 mT at 300 K. Colours in d–f (see colour wheel) depict the direction (white arrows) of the local in-plane magnetization; black shows the out-of-plane magnetization.
