Fig. 4: Detected F-signal at both basal and apical sites and its effect on the atomic structure distortion. | Nature Communications

Fig. 4: Detected F-signal at both basal and apical sites and its effect on the atomic structure distortion.

From: Atomic-scale observation of geometric reconstruction in a fluorine-intercalated infinite layer nickelate superlattice

Fig. 4

a Overview and b enlarged HAADF images of the region marked by yellow dashed box in a for EELS measurements of the NdNiO2Fx inner layer. The yellow dashed lines in a mark the SrTiO3/NdNiO2Fx interfaces. Red and yellow spots in b mark the apical and basal sites, respectively. c The F signal extracted from the red spots in b. d The F signal extracted from the yellow spots in b. e The relative O/F signal intensity ratio at the apical and basal sites.

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