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|Melt growth and superconducting properties of textured Ag-YBa2 Cu3O7 conductors
Martínez Benjamin, Joan Josep
Chimenos Ribera, Josep Ma.
|Difracció de raigs X
Superconductivitat a altes temperatures
Crystal growth from melt
Zone melting recrystallisation
|Textured Ag foils 200 /spl mu/m thick have been obtained after cold rolling and recrystallization at 800/spl deg/C with a reduction ratio of up to 95%. Subsequently, a thick layer of YBa/sub 2/Cu/sub 3/O/sub 7/ (20 /spl mu/m) has been deposited by screen printing, A directional solidification process under a temperature gradient with displacement velocity between 1 mm/h and 10 mm/h has been performed to induce a biaxial texture to the superconducting layer. This last treatment has been performed at low P(O/sub 2/) atmosphere and at maximum temperatures below 945/spl deg/C. The texture of the layers has been studied by X-ray diffraction, rocking curves and pole figures, whilst the critical currents have been measured inductively by SQUID magnetometry. The relationship between the in-plane crystalline orientation and the observed critical currents has been discussed.
|Reproducció del document publicat a http://dx.doi.org/10.1109/77.784673
|It is part of:
|IEEE Transactions on Applied Superconductivity, 1999, vol. 9, núm. 2, p. 1483-1486.
|Appears in Collections:
|Articles publicats en revistes (Ciència dels Materials i Química Física)
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