Fig. 2: STEM characterization of as-grown SFCO films. | Nature Communications

Fig. 2: STEM characterization of as-grown SFCO films.

From: Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)Oy

Fig. 2

Crystal structures (a, d, g, j), cross-sectional HAADF- (b, e, h, k), and ABF-STEM images (c, f, i, l) for as-grown Sr(Fe1−xCox)Oy films with x = 0 (a, b, c), x = 0.5 (d, e, f), x = 1.0 (g, h, i), and LSAT substrates. The STEM images were taken along the [110] direction of LSAT substrates. The crystal structure models were drawn using the VESTA program43. In (a, d, and g), the green and red balls indicate Sr and O atoms, and the balls in oxygen octahedra and tetrahedra correspond to either Fe or Co. In (j), the green, light blue, beige, and red balls correspond to La/Sr, Al, Ta, and O atoms.

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