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Effect of Ca doping in YBCO superconducting thin films

✍ Scribed by A. Augieri; T. Petrisor; G. Celentano; L. Ciontea; V. Galluzzi; U. Gambardella; A. Mancini; A. Rufoloni

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
436 KB
Volume
401
Category
Article
ISSN
0921-4534

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✦ Synopsis

We investigate the effect of partial substitution of Y by Ca in YBCO superconducting thin films. The films were grown on (1 0 0) SrTiO 3 single crystal substrates by pulsed laser deposition (PLD). The Ca doped film were ablated from Y 1Γ€x Ca x Ba 2 Cu 3 O 7Γ€d targets with x ΒΌ 0, 0.05, 0.07, and 0.10. The dc transport properties of the films in applied magnetic field are analyzed to study the role of Ca on the superconducting properties of YBCO films. The irreversibility line for the samples with x ΒΌ 0 and 5 at.% Ca was derived from the E-J curves using a scaling theory for the vortex-glass transition.

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