Fig. 6: Layerwise premelting at the fault.
From: Atomic-scale observation of premelting at 2D lattice defects inside oxide crystals
a An atomic illustration is provided in the first STEM image to verify the presence of a fault. b−d Images I−III (1400 °C) directly show the layer-by-layer behavior at the initial stage of premelting. Open circles represent the layers contacting atomic columns with low intensity due to significant atomic displacement by melting. e In image IV (1500 °C), melting of multiple atomic layers (more than four layers) is identified along with diffuse interfaces between the bulk crystal and the melted layer.
