Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
57 (1990), S. 712-714
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Thin films of superconducting BiCaSrCuO have been grown by molecular beam epitaxy depositions of Bi, Cu, and CaF2/SrF2 on MgO and SrTiO3 followed by a high-temperature oxygen anneal. The films showed a fairly wide transition of 20 K at a Tc of 80 K. Residual amounts of fluorine, detected with secondary-ion mass spectrometry, are believed to cause the broad superconducting transition. X-ray diffraction analysis of the superconducting films revealed strongly c-axis oriented films consisting of Bi2CaSr2Cu2O8 and Bi2Sr2Cu1O6 phase. Surface structure studies, with scanning electron microscopy and scanning tunneling microscopy, show oriented 1 μm sized very smooth flat grains of superconducting phase in the plane of the film with islands of CuOx scattered on top of these.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.104256
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