TEM images of different layered structures. Image (a) Fa₁₀₀-P5mJ with a two-layer structure: amorphous layer plus olivine host. Image (b) High-resolution TEM image of np-Fe⁰ distributed in the middle and bottom of the amorphous layer in image (a). The interplanar spacing is d = 0.203 nm, which is consistent with a crystal lattice plane (110) of α-Fe. Image (c) Fa₁₀₀-P25mJ with a three-layer structure: vapor deposition layer plus amorphous layer plus olivine host. Image (d) Fa₁₀₀-M150mJ with a three-layer structure: amorphous layer plus subsolidus layer plus olivine host that differs from that of image (c). Image (e) Fa₇₁ -P5mJ, (f) Fa₇₁ -P75mJ, (g) Fa₇₁-M75mJ, (h) Fa₅₀-P75mJ, and (i) Fa₅₀-M75mJ in which the three-layer structure represents most of the samples: amorphous layer plus subsolidus layer plus olivine host. Image (j) EDS mapping of (i) showing the elemental distribution of Mg and Fe. Image (k) represents the characteristics of Fa29 in the energy range from P5mJ to M75mJ and with a four-layer structure: vapor deposition layer plus amorphous layer plus subsolidus layer plus olivine host. Image (1) shows Fa₂₉-M150mJ with a three-layer structure: amorphous layer plus subsolidus layer plus olivine host. This figure shows the variation in the layer structure produced by olivine with different iron contents at different energy levels.