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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:67 Issue:11 Help

Structure and superconducting properties of YBa2Cu3O7-x films prepared by nitrogen laser evaporation and CO2 laser annealing in oxygen

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8 Author(s)
Serbezov, V. ; Institute of Applied Physics, Bulgarian Academy of Sciences, Plovdiv, Bulgaria ; Benacka, St. ; Hadgiev, D. ; Atanasov, P.
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Superconducting YBa2Cu3O7-x thin films were obtained under high vacuum (10-5 Torr) on substrates of polycrystalline Al2O3 sapphire, SrTiO3, and Si, having zero resistance at 81, 85, 87, and 79 K, respectively. A N2 laser of 3.5 J cm-2 energy density was used for the evaporation. The substrates were heated by a cw single‐mode CO2 laser and the annealing was performed by the same laser in O2 atmosphere. Local planar superconducting regions were obtained by focusing the radiation of the cw CO2 laser upon the films. The films were investigated by scanning electron microscope, x‐ray microanalysis, and x‐ray diffraction.

Published in:
Journal of Applied Physics  (Volume:67 ,  Issue: 11 )

Date of Publication: Jun 1990

Page(s):
6953 - 6957
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.345039
Product Type:
Journals & Magazines
Date of Current Version :
07 July 2009
Issue Date :
Jun 1990

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