Fig. 2. STEM, heat capacity, and SHG characterizations of CrSBr bulk crystals.

a summary of magnetic phases and corresponding characteristic temperatures in bulk and few-layer CrSBr from the literature. b plan- and c side-view atomically resolved HAADF-STEM images of the CrSBr crystal, confirming the scarcity of atomic and stacking defects. d temperature dependent specific heat result showing the three reported characteristic temperatures, T* = 185 K, T** = 155 K, and T_N = 132 K. e temperature dependent SHG intensity in the S_in-S_out channel at the angle $\varphi =40^{\circ }$ revealing an onset at 140 K for 3D bulk CrSBr, different from the bulk T_N = 132 K. The red curve serves as a guide to the eyes. Error bars indicate the noise level of each SHG measurement.