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Flux pinning properties of YBCO/DyBCO multilayers
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10.1063/1.2978351
/content/aip/journal/jap/104/6/10.1063/1.2978351
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/6/10.1063/1.2978351

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of the YBCO monolayer and the YBCO/DyBCO multilayers: bilayer and trilayer.

Image of FIG. 2.
FIG. 2.

Top row: [(a)–(c)] images of the YBCO monolayer film acquired by SEM (a) and AFM showing the as-grown morphology (b), and after chemical etching (c). Middle row: images of the YBCO/DyBCO bilayer film. Bottom row: images of the YBCO/DyBCO trilayer film. AFM images are each.

Image of FIG. 3.
FIG. 3.

XRD patterns of the YBCO monolayer and YBCO/DyBCO multilayers. For comparison, the XRD pattern of a 600 nm DyBCO monolayer film is included (topmost). The inset shows the magnified (002) peak of the DyBCO monolayer film.

Image of FIG. 4.
FIG. 4.

Magnetic-field angular dependence of at (a), 0.5 T (b), 2.0 T (c), and 4.0 T (d) for the films of various structures: monolayer, bilayer, and trilayer. Significantly improved performance at all angles can be seen for the multilayer films. In (b), the data for an thick YBCO monolayer film is included for comparison (monolayer 2).

Image of FIG. 5.
FIG. 5.

Scaling of at 77.3 K assuming : (a) YBCO monolayer, (b) YBCO/DyBCO bilayer, and (c) YBCO/DyBCO trilayer.

Image of FIG. 6.
FIG. 6.

Angular-dependent at 77.3 K and 0.5 T for the (a) YBCO monolayer, (b) YBCO/DyBCO bilayer, and (c) YBCO/DyBCO trilayer. The random pinning contribution, is indicated as the solid line in each plot.

Image of FIG. 7.
FIG. 7.

Angular-dependent at 77.3 K and 4.0 T for the (a) YBCO monolayer, (b) YBCO/DyBCO bilayer, and (c) YBCO/DyBCO trilayer. The random pinning contribution, is indicated as a solid line in each plot.

Image of FIG. 8.
FIG. 8.

, normalized height at for the YBCO monolayer, and the YBCO/DyBCO multilayers. Among the three, the trilayer film exhibits the largest .

Tables

Generic image for table
Table I.

Summary of relevant characterization data of representative YBCO/DyBCO multilayer and YBCO monolayer films: , .

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/content/aip/journal/jap/104/6/10.1063/1.2978351
2008-09-23
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Flux pinning properties of YBCO/DyBCO multilayers
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/6/10.1063/1.2978351
10.1063/1.2978351
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