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Substrate influence on the growth of Co-doped epitaxial thin films
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Image of FIG. 1.
FIG. 1.

RHEED oscillation patterns for (a) and (b) .

Image of FIG. 2.
FIG. 2.

RHEED images in the [100] direction of (a) LAO(001) substrate after the cleaning procedure, (b) STO(001) substrate after the cleaning procedure, (c) after deposition, (d) after deposition, (e) , and (f) after deposition.

Image of FIG. 3.
FIG. 3.

AFM image of the sample (a) , (b) , (c) , and (d) .

Image of FIG. 4.
FIG. 4.

High-angle x-ray diffraction of the Co-LSTO films on LAO(001) (a) and STO(001) : peaks coming from the sample holder.

Image of FIG. 5.
FIG. 5.

scans of the (202) reflections of the Co-LSTO film on LAO [(a) and (b)] and on STO [(c) and (d)].

Image of FIG. 6.
FIG. 6.

Reciprocal space maps close to the (013) reflection of the film and the substrate for the -thick Co-LSTO films on LAO (a) and on STO (b). r.l.u. is for reciprocal lattice units. The dotted lines are guides to the eye, to help in visualizing the degree of in-plane parameter relaxation.

Image of FIG. 7.
FIG. 7.

Hysteresis loops obtained at room temperature with an AGFM for the -thick Co-LSTO film on STO (a) and on LAO (b). Insets show details in the low-field region.


Generic image for table
Table I.

Morphology and structural paramters for the Co-LSTO.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Substrate influence on the growth of Co-doped La0.5Sr0.5TiO3−δ epitaxial thin films