Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
52 (1988), S. 2080-2082
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Superconducting films of Bi-Sr-Ca-Cu oxides have been grown on MgO substrates by multitarget magnetron sputtering. After post-annealing in an oxygen atmosphere, zero resistance was obtained at about 80 K. X-ray diffraction indicates a high degree of preferential growth of the c axis perpendicular to the substrate. Measurements of the upper critical field Bc2(T) of these films show critical field slopes (B'c2≡−dBc2/dT at Tc) of 8.5 and 0.56 T/K, respectively, for B parallel and perpendicular to the substrate. The anisotropy of ∼15 and the Bc2(parallel) are the highest values yet reported for high-temperature superconductors.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.99753
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