✦ LIBER ✦

Fabrication of in-situ superconducting thin films of (Y,Tm)-Ba-Cu-O on SrTiO3, NdAlCaO4 and LaGaO3 substrates

✍ Scribed by P. Przyslupski; L.T. Baczewski; M. Berkowski; H. Adrian; C. Tome-Rosa; G. Jakob

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 353 KB
Volume: 165-166
Category: Article
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(09)80323-2

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✦ Synopsis

We report in-situ preparation of thin films of the high-Tc-superconductors YBaZCu307_5 and TmBazCu307_5 by d.c.-magnetron sputtering. The films were deposited on single-crystalline SrTi0 3 , NdA1Ca04 and LaGa03 substrates held at temperatures between 720°C and 750°C. The applied method proved to be highly reproducible. X-ray diffraction analysis revealed that the YBazCu307_5-films grow highly c-axis oriented or epitaxial, whereas the TmBazCu307_5-films tend to grow partially c-axis and a-axis oriented. The transition to the superconducting state (zero resistance) is completed between 84K-86K with onset at about 91K for YBaZCu307-5. The corresponding data for TmBazCu307_5 are 79K-81K and 88K.

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