Electrodeposited films of YBa 2Cu 3O 7−x on Ag and on SrTiO 3: a comparison
Thick films (∼ 30μ) of YBa 2Cu 3O 7−x (YBCO) have been obtained through cationic electrodeposition on silver and on reduced SrTiO 3, so as to make it conducting and eliminate the need for a conducting buffer layer (Spanish patent P9802655). The superconducting films morphology is, in both cases, of...
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Published in | Physica. C, Superconductivity Vol. 341; pp. 2375 - 2376 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
2000
|
Online Access | Get full text |
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Summary: | Thick films (∼ 30μ) of YBa
2Cu
3O
7−x (YBCO) have been obtained through cationic electrodeposition on silver and on
reduced SrTiO
3, so as to make it conducting and eliminate the need for a conducting buffer layer (Spanish patent P9802655).
The superconducting films morphology is, in both cases, of a columnar type, as shown by SEM, leaving some empty spaces in between the columns. These spaces can be diminished, when silver is used as a substrate, by a multiple sequential electrodeposition. Although the films are then not continuous, critical temperatures are as high as usual (∼ 92 K) and critical currents (as determined by the Bean method) are, in A/cm
2, respectively 9 500 for YBCO/Ag and 3 250 for YBCO/SrTiO
3. |
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ISSN: | 0921-4534 1873-2143 |
DOI: | 10.1016/S0921-4534(00)01266-1 |