Figure 3

Vector tomography reconstruction of simulated data. (a-f) Three magnetic components at the central slice in the z direction of the model (a–c) and vector tomography reconstruction (d–f) from the simulated data where the normalized cross correlations are 94.1%, 93.8% and 99.1% for \(M_x\), \(M_y\) and \(M_z\) respectively. (g) Fourier shell correlation of the three magnetic components, also confirming that the z component has higher quality than the x and y components. (h–k) 3D magnetization vector field of the model, including the overall vector field (h), the central slice along the z direction (i), two topological defects with positive charge (j) and negative charge (k), where the colors represent the different directions of the vectors. (l–o) Reconstructed 3D magnetization vector filed, including the overall vector field (l), the central slice along the z direction (m), two topological defects with positive charge (n) and negative charge (o), which are in good agreement with (h–k).