banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Self-assembled oxide nanopillars in epitaxial thin films for vortex pinning
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

(a) The cross-sectional TEM image of Co-doped Ba-122 film grown on 100 u.c. STO/LSAT. This image is viewed along the [100] zone axis. The inset at the top left is the corresponding SAED pattern. (b) A magnified region of the line defects near the film/STO interface. (c) The planar view bright field TEM image viewed along the [001] zone axis. The corresponding SAED pattern inset at the bottom left shows a single crystal pattern. (d) A high resolution STEM image of (c) showing the structure of the nanopillars in the Ba-122 film. (e) A high angle annular dark field (Z-contrast) image showing the atomic structure of an epitaxial nanopillar in the Ba-122 film.

Image of FIG. 2.
FIG. 2.

(a) HAADF image showing the analyzed region which includes both a nanopillar and the Ba-122 matrix. (b) The change of the atomic ratio of Ba, Fe, As, and O along the line in (a). Relative composition maps for Ba, Fe, As, and O are shown in (c)–(f), respectively.

Image of FIG. 3.
FIG. 3.

Schematic models showing the growth process of the nanopillars in the Ba-122 matrix. (a) Nanosized oxide islands nucleate on the surface of STO template. (b) Nanopillars of uniform diameter embed in the fully grown Ba-122 matrix. (c) The nanopillar is coherently strained by the surrounding Ba-122 matrix.

Image of FIG. 4.
FIG. 4.

Magnetization as a function of magnetic field at 4.2 K with the field applied perpendicular to the plane of the film for the Ba-122 film on 100 u.c. STO/LSAT. The change in slope at corresponds to .


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Self-assembled oxide nanopillars in epitaxial BaFe2As2 thin films for vortex pinning