fig1

Figure 1. Structural characterization of SRO films grown on STO (001) substrates at room temperature. (A) Schematics of the SRO and STO crystal structure; (B) 2θ-ω XRD scans of the epitaxial SRO films around the STO (002) peak with variable thickness; (C) Lattice constant c vs. thickness of SRO film. The black dotted line represents the pseudo-cubic c-lattice of bulk SRO; (D) The AFM topography images of the SRO film, offering a visual representation of its surface. SRO: SrRuO₃; STO: SrTiO₃; XRD: X-ray diffraction; AFM: atomic force microscopy; uc: unit cells.