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The combined effect of thermal annealing of MgO substrate and Ca substitution on the surface resistance of thin films
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10.1063/1.1949716
/content/aip/journal/jap/98/1/10.1063/1.1949716
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/1/10.1063/1.1949716

Figures

Image of FIG. 1.
FIG. 1.

(Color online) AFM topography image of YCBCO films grown on annealed MgO.

Image of FIG. 2.
FIG. 2.

(Color online) Variation of and with in YCBCO films. The lines are to guide the eyes.

Image of FIG. 3.
FIG. 3.

(Color online) X-ray scans around the (102) peak in YCBCO films.

Image of FIG. 4.
FIG. 4.

(Color online) Resistivity plots obtained with YCBCO films grown on annealed MgO. The inset depicts the magnified transition region, normalized to the value at .

Image of FIG. 5.
FIG. 5.

(Color online) Resistivity plots obtained with and 0.02 films grown on annealed and unannealed MgO. The inset depicts the magnified transition region.

Image of FIG. 6.
FIG. 6.

(Color online) Variation of (normalized to the value at ) with in YCBCO films. Shown in the insets are variation of with in and 0.02 films grown on annealed and unannealed MgO.

Image of FIG. 7.
FIG. 7.

(Color online) Scanning electron micrographs of YCBCO films. The upper two figures, (as) and (as), correspond to respective films grown on unannealed MgO.

Image of FIG. 8.
FIG. 8.

(Color online) Variation of (defined as where is unit-cell volume) with in YCBCO films. Shown in the insets are variation of the Hall number and the slope with .

Image of FIG. 9.
FIG. 9.

(Color online) Temperature dependency of in YCBCO films.

Image of FIG. 10.
FIG. 10.

(Color online) in YCBCO films grown on (a) annealed MgO and (b) unannealed MgO.

Image of FIG. 11.
FIG. 11.

(Color online) in and 0.02 films grown on annealed MgO.

Image of FIG. 12.
FIG. 12.

(Color online) in and 0.02 films grown on unannealed MgO.

Image of FIG. 13.
FIG. 13.

(Color online) Reduced temperature dependence of YCBCO films grown on annealed MgO at . The insets show (a) the effect of the Ca cover layer on and (b) curves obtained with and 0.02 films grown on unannealed MgO.

Tables

Generic image for table
Table I.

Unit-cell parameters, , , and of YCBCO films.

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/content/aip/journal/jap/98/1/10.1063/1.1949716
2005-07-14
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The combined effect of thermal annealing of MgO substrate and Ca substitution on the surface resistance of YBa2Cu3Oz thin films
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/1/10.1063/1.1949716
10.1063/1.1949716
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