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Conducted growth of SrRuO3 nanodot arrays on self-ordered La0.18Sr0.82Al0.59Ta0.41O3(001) surfaces
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) AFM topographic images (left panel) and the corresponding phase-shift images (right panel) after 2 h treatments of a LSAT single-crystal at (a) 1100 °C, (b) 1200 °C, and (c) 1300 °C. The same wafer was cut in three pieces and each piece suffered one of the single-treatments. The insets (center panel) are closer views (1 × 1 μm2) of the topography with the corresponding height profiles. The additional inset in (c) is a RHEED pattern taken along the [100] direction of the 1300 °C-treated substrate.

Image of FIG. 2.
FIG. 2.

(Color online) Sketch of the self-assembly of the chemical terminations in ABO3(001) single-crystals, with lateral ordering driven by the surface steps from (a) as-received (mixed) state to (b) annealed (ordered) state.

Image of FIG. 3.
FIG. 3.

(Color online) (a) AFM phase-shift image (1 × 1 μm2) of a LSAT single-crystal treated at 1300 °C for 2 h. AFM topographic images (b) 1 × 1 μm2 and (c) 5 × 5 μm2 after growth of SRO. The inset in (c) is the self-correlation of the topographic image with the corresponding profiles taken across (inter-line correlation) and along (intra-line correlation) the substrate steps direction. (d) and (e) Histograms of lateral sizes of the dots shown in (b), in the direction perpendicular and parallel to the steps, respectively. (f) Height profile along the line marked in (b). (g) RHEED pattern after SRO growth taken along the [100] direction.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Conducted growth of SrRuO3 nanodot arrays on self-ordered La0.18Sr0.82Al0.59Ta0.41O3(001) surfaces