TITLE

Superconductivity in thin films of Bi-Sr-Ca-Cu oxide deposited via laser ablation of oxide pellets

AUTHOR(S)
Jaggi, N. K.; Meskoob, M.; Wahid, S. F.; Rollins, C. J.
PUB. DATE
October 1988
SOURCE
Applied Physics Letters;10/17/1988, Vol. 53 Issue 16, p1551
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have grown superconducting films on the technologically important sapphire substrates by CO2 pulsed laser ablation from fully superconducting targets of Bi2Sr3-xCaxCu2Oy followed by appropriate post-annealing. The composition of the films was found to deviate slightly from the target. Nevertheless, films with metallic resistivity decreasing between room temperature and 95 K, Tc(onset) of about 90 K and Tc(zero) of 72 K have been obtained. Magnetoresistance measurements in fields up to 12.85 T give a value of dHc2/dT of 1.6 T/K, which is intermediate between reported values of parallel and perpendicular Hc2 of fully aligned thin films. The implied partial orientation is consistent with the morphology seen by scanning electron microscopy.
ACCESSION #
9828449

 

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