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Grain and grain-boundary critical currents in coated conductors with noncorrelating and substrate grain-boundary networks
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10.1063/1.2172737
/content/aip/journal/apl/88/13/10.1063/1.2172737
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2172737
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Cross section TEM images of (a) IBAD-1 and (b) IBAD-2. Vertical striations in the bottom part of both images correspond to different grains in the IBAD-YSZ layer (grain size ). Different contrast in the YBCO layer in (a) is due to grain-to-grain tilts, indicating a lateral grain size of . Image (b) shows two large YBCO grains stacked along the axis, separated by an intercalated Ba–Cu–O layer (see Ref. 5). The grains extend beyond the vertical edges of the image. MO images for (c) IBAD-1 and (d) IBAD-2 after zero-field cooling the samples at and applying 4.

Image of FIG. 2.
FIG. 2.

Saturated reverse branches of M(H) for (엯) IBAD-1, (●) IBAD-2, (◻) RABiTS-1, and (∎) RABiTS-2. , is indicated by arrows. Inset shows minor M(H) of RABiTS-2 at , 600, 800, 1000, 2000, and . , and are indicated.

Image of FIG. 3.
FIG. 3.

Theoretical factor as a function of the cylinder aspect ration (continuous line) (defined in Ref. 12) Superimposed are the experimental values for (엯) IBAD-1, (●) IBAD-2, (◻) RABiTS-1, and (∎) RABiTS-2. Inset shows the average grain sizes as a function of the average substrate grain size. The solid line indicates substrate grain size equal to YBCO grain size.

Image of FIG. 4.
FIG. 4.

(closed symbols) and (open symbols) as a function of the thickness of the YBCO layer, at , for several RABiTS with replica of the GB network including RABiTS-1 (squares), RABiTS with GB overgrowth; including RABiTS-2 (diamonds), and for IBAD-1 (triangles), and IBAD-2 (circles). Also included are values of the transport for RABiTS samples with replica of YBCO GB network (stars).

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/content/aip/journal/apl/88/13/10.1063/1.2172737
2006-03-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Grain and grain-boundary critical currents in coated conductors with noncorrelating YBa2Cu3O7 and substrate grain-boundary networks
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2172737
10.1063/1.2172737
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