Author:
Naito M.,Hammond R. H.,Oh B.,Hahn M. R.,Hsu J. W. P.,Rosenthal P.,Marshall A. F.,Beasley M. R.,Geballe T. H.,Kapitulnik A.
Abstract
The successful synthesis of high-Tc YBa2Cu3O7 films by means of electron-beam codeposition are reported. Several important growth parameters have been surveyed in a preliminary way. The substrates investigated include Al2O3, ZrO2, MgO, and SrTiO3, The films were characterized by resistivity measurements, x-ray diffraction, microprobe, and Rutherford backscattering analysis. Some TEM and critical current density studies were also carried out. The best results to date have been obtained on SrTiO3 substrates with which polycrystalline epitaxial growth has been achieved. Resistive superconducting transitions with zero resistance at 89.5 K and a 2 K width have been observed in these films.
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference14 articles.
1. Possible highT c superconductivity in the Ba?La?Cu?O system
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3. 11The deposition conditions and microprobe compositions of all the films in this paper are shown in the figure caption in the following way: Film No. [substrate temperature Ts, Y source (Y or Y2O3), microprobe composition (Y:Ba:Cu by percentage)].
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