fig5

Figure 5. (A) The grain configuration and grain size effect of phase coexistence and magnetoelastic response of Tb_0.27Dy_0.73Fe₂ nanocrystals. (a) Grain size effect phase coexistence around ferromagnetic MPB. (b) Magnetostriction loops of different-sized nanocrystals. (c) Magnetization and domain structures of the polycrystals with different average grain sizes^[90]. (B) Dataset of 3D microstructures of polycrystalline Tb_0.3Dy_0.7Fe₂ and their effective magnetostriction. Distributions of (a) size (represented by the number of voxels), (b) the number of neighboring grains for a specific grain, and (c) three Euler angles of the 87,981 grains in the entire dataset of 492 microstructures. (d) An example of 3D polycrystalline microstructure in the dataset. (e) Local magnetization and (f) local magnetostriction on the 2D slice. (g) Effective magnetostriction of the 3D microstructure as a function of the applied magnetic field^[91].